our text describes a trade-off that we must make as engineers between our confidence in the value of a parameter versus the precision with which we know the value of that parameter. that trade-off might be affected by whether we are looking at a two-sided or bounded (one-sided) interval. discuss your interpretation of the confidence-precision trade-off, and provide a few examples of how you might make a choice in one direction or the other in an engineering situation.
To boost the level of trust in the forecasted values, a balancing point must be attained.
The two phrases confidence interval and precision are intended to provide an accurate estimate of an object's measurability. We can compromise on the confidence level if the precision rises, but if the confidence level rises, the precision of the anticipated value likewise deteriorates.
Therefore, a balance point between these two variables must be reached in order to improve our confidence in the numbers being forecasted without compromising an accurate evaluation of accuracy. ensuring that accuracy and confidence are both upheld.
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Which equation represents the line that is perpendicular to y=1/6 and passes through (-8,-2)?
Answer:
y = -6x - 50
Step-by-step explanation:
y = mx + b
Since it is perpendicular to y=1/6, the slope is -6. (Opposite reciprocal)
y = -6x + b.
Substitute to get: -2 = 48 + b
b = -50
y = -6x - 50
When I am added to -6 The result is 18 who am I
Answer:
I think 24
Step-by-step explanation:
-6 + 24 =18
Marquis has a gross pay of $816. By how much will his gross pay be reduced if marquis has the following items withheld?federal tax of $92social security tax that is 6. 2% of his gross paymedicare tax that is 1. 45% of his gross paystate tax that is 22% of his federal taxa. $82. 66b. $129. 13c. $164. 01d. $174. 66.
As per the given tax percent deduction from Marquis gross pay of $816 , the gross pay is reduced by $174.66.
As given in the question,
Gross pay taken by Marquis is equal to $816
Items withheld from Marquis gross pay are as follow:
1. Federal tax = $92
2. Social security tax = 6.2% of gross pay
6.2% of 816
= (6.2/100) × 816
= $50.592
3. Medicare tax = 1.45% of gross pay
= 1.45% of 816
= (1.45/100) × 816
= $11.832
4. State tax = 22% of federal tax
= 22% of 92
= ( 22 /100) × 92
= $20.24
Total reduced tax amount from Marquis gross pay
= $ ( 92 + 50.592 + 11.832 +20.24 )
= $ 174.664
≈ $174.66
Therefore, for the given tax percent deduction from Marquis gross pay of $816 , the gross pay is reduced by $174.66.
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39.7 consumers believe that cash will be obsolete in the next 20 years. assume that 6 consumers are randomly selected. find the probability that fewer than of the selected consumers believe that cash will be obsolete in the next 20 years.
The probability that fewer than 3 of the selected consumers believe that cash will be obsolete in the next 20 years is ;
Pr(C & fewer than 3) = 0.1985
What is probability?
Simply put, probability measures how probable something is to occur. We can discuss the probabilities of various outcomes, or how likely they are, whenever we are unsure of how an event will turn out. Statistics is the study of events subject to probability.
Here, we are required to find the probability that fewer than 3 of the selected consumers believe that cash will be obsolete in the next 20 years.
Let Pr(C) be the number of consumers who believe that cash will be obsolete in the next 20 years.
Therefore, since 39.7% believe so,
Pr(C) = 39.7/100 = 0.397
If 6 consumers are selected randomly, the probability that fewer than 3 of the selected consumers believe that cash will be obsolete in the next 20 years will be;
Probability of 2 out 6 to believe so or Probability of 1 out of 6 to believe so.
Pr(2/6) + Pr (1/6)
Therefore the probability that fewer than 3 of the selected consumers believe that cash will be obsolete in the next 20 years is;
Pr (fewer than 3) = (2/6) + (1/6)
Pr (fewer than 3) = 3/6
Therefore, the probability that fewer than 3 of the selected consumers believe that cash will be obsolete in the next 20 years is ;
Pr(C) × Pr (fewer than 3)
i.e 0.397 × (3/6) = 0.1985
Therefore, the probability that fewer than 3 of the selected consumers believe that cash will be obsolete in the next 20 years is ;
Pr(C & fewer than 3) = 0.1985
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Find X FIND Y
PlEase Help me
The X and Y angles created by lines intersection in the pictures are 18° and 54°.
Based on the picture, angle ∠MON is a right angle hence it has an 90° angle. We then know that the ∠MOA is 72°. Because angle ∠MOA lies within the angle ∠MON, hence we can write the following formula:
∠MON = ∠MOA +∠AON = 90°
∠MON = 72° + ∠AON = 90°
∠AON = 18° ... (i)
If we focus on the line CD being intersected by the line AB, hence we can conclude that the angles form by this intersection will follow these rules:
∠AOD = ∠BOC
∠AOC = ∠BOD
∠AOD + AOC = 180°
∠BOC + ∠BOD = 180°
Based on the picture, we know that:
∠BOC = x
∠AOC = ∠MOA + ∠MOC
∠AOC = 72° + y ...(ii)
∠AOD = ∠AON + ∠NOD
∠AOD = 18° +2x
∠BOC = 3x ... (iii)
Because we already know that ∠BOC = AOD, hence we could rewrite the formula into:
∠BOC = ∠AOD
3x = 18° + 2x
x = 18° ... (iv)
To find the value of y, we need to focus on angle ∠AOC. Based on the previous calculations and formulas, we know that:
∠AOC + ∠BOC = 180° ... (v)
Input equations (ii) and (iv) into (v)
∠AOC + ∠BOC = 180°
(72° + y) + 3x = 180°
72° + y + 3(18°) = 180°
126° + y = 180°
y = 54° ... (vi)
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PLS HELP ASAP
Like AD is parallel to line HE. what is the value of x?
Answer:
Step-by-step explanation:
The value of x= 110 degrees as it is corresponding to the angle equal to 110 degrees.
Find the measure of each angle indicated by the “?”. Also tell me what type of angle it is for example: alternate exterior.
Answer: ? = 50, same side interior angles
? = 84, alternate interior angles
Step-by-step explanation:
130 + x = 180
-130 = -130
x = 50
alternate interior angles are congruent
50° is the value of the missing angle.
Since u and v lines are parallel so the angle asked and the angle with the value of 130° are alternate interior angle.
Alternate interior angles have the following characteristics:
They are congruent: Alternate interior angles are equal in measure. If one angle measures x degrees, the other alternate interior angle will also measure x degrees.They are on opposite sides: Alternate interior angles are located on opposite sides of the transversal.They are inside the parallel lines: Alternate interior angles are positioned between the two parallel lines.Therefore,
x+130 = 180
x =180-130
x =50°
therefore, the missing angle is 50°.
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Solve the following system of equations with the substitution method:
√x + y
ly
=
4
3x
Somebody help please
The value x is 1 and y is 3.
What is Equation?Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides. LHS = RHS is a common mathematical formula.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given:
x+ y = 4
y= 3x
Now solving above equations
x+ 3x = 4
4x = 4
x= 1
and, y = 3x = 3
Hence, the value x is 1 and y is 3.
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he images on a computer screen are made up of more than 500 pixels,or dots,per square inch. How many pixels are on a computer screen that measures 108 square inches. Write answers in scientific notation
Answer:
Step-by-step explanation:
500(108)=54000 i may not be right
Use the data 2, 3, 3, 5, 5, 6. Add 2 to each of the numbers. How does this affect the mean? How does this affect the
standard deviation?
Choose the correct answer below.
OA. Both of the mean and the standard deviation will be increased.
OB. The standard deviation will be increased by 2, and the mean will remain the same.
OC. Both of the mean and the standard deviation will remain the same.
OD. The mean will be increased by 2, and the standard deviation will remain the same.
stio
stio
stio
stio
The mean will be increased by 2, and the standard deviation will remain the same (option D).
What happens to the mean and the standard deviation?The first step is to determine the initial mean and standard deviation of the data.
Mean is the average of a set of numbers.
Mean = sum of numbers / total number in the data
(2 + 3 +3 + 5 + 5 + 6) / 6
24 / 6 = 4
Standard deviation is used to determine how the values in a group differs from the mean of the values in the group. It is a measure of variation.
Standard deviation of the initial data = √[{(2 - 4)² + (3 -4)² + (3 - 4)² + (5 - 4)² + (5 - 4)² + (6 - 4)²} / 6] = 1.414
Now, determine the mean and the standard deviation of the new data
New data : (2 + 2 =4)
3 + 2 = 5
3 + 2 = 5
5 + 2 = 7
5 + 2 = 7
6 + 2 = 8
Mean = (4 + 5 + 5 + 7 + 7 + 8) / 6 = 6
Standard deviation = √[{(4 - 6)² + (5 - 6)²+ (5 - 6)² + (7 - 6)² + (7 - 6)² + (8 - 6)²} / 6] = 1.41
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Gabrielle is 10 years younger than Mikhail. The sum of their ages is 74. What is Mikhail's age?
Answer:
Mikhail is 42 years old
Step-by-step explanation:
help plss i need this done by 12
Answer:
oh no
Step-by-step explanation:
Translate this sentence into an equation.
The product of 4 and Victor's savings is 60.
Use the variable v to represent Victor's savings. PLEASE THIS IS DUE TODAY!!!!
Answer:
4 × v = 60
= 15
Step-by-step explanation:
v represents Victor's savings
4 × v = 60
4v = 60
Divide both sides by 4v
v = 60/4
v = 15
4. Kojo is given $1.20 to buy some peaches and apples. Peaches cost
20c each, apples 10c each. He is told to buy at least 6 individual
fruits, but he must not buy more apples than peaches.
Let x be the number of peaches Kojo buys.
Let y be the number of apples Kojo buys.
(a) Write down three inequalities which must be satisfied.
(b) Draw a linear programming graph and use it to list the
combinations of fruit that are open to Kojo.
Required inequalities are 0.20x=1.20, 0.10y = 1.20 and 0.20x + 0.10y = 1.20. Combination of fruits open to Kojo are (6,0), (1,10), (2,8), (3,6), (4,4), (5,2), (0,12)
Given,
Kojo is given $1.20 to buy some peaches and apples. Peaches cost 20c each, apples 10c each.
He is told to buy at least 6 individual fruits, but he must not buy more apples than peaches.
Let x be the number of peaches Kojo buys.
Let y be the number of apples Kojo buys.
(a)Since Kojo has $1.20 to buy peaches and apples; and each peach and apple costs 20c and 10c respectively.
We have the following inequalitites:
0.20x = 1.20
0.10y = 1.20
0.20x + 0.10y = 1.20
(b)Possible combinations of fruits are as follows:
x = 1.20/0.20 = 6
y = 1.20/0.10 = 12
x = 1,2,3,4,5 ; y = 10,8,6,4,2
Thus, Required inequalities are 0.20x=1.20, 0.10y = 1.20 and 0.20x + 0.10y = 1.20. Combination of fruits open to Kojo are (6,0), (1,10), (2,8), (3,6), (4,4), (5,2), (0,12)
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let the random variable x represent the profit made on a randomly selected day by a certain store. the distribution of x is approximately normal with a mean of $360 and a standard deviation of $50. what is the probability that the profit made by this store on a randomly selected day is greater than $400?
The number of standard deviations a score has from the population mean is measured by the z-score, also known as the standard score.
The range of the z-scores is from 3 to 3 on the normal distribution curve, and values outside of this range are called outliers. The z-score's formula is as follows:
Z=X-μ/σ
First, convert the given X value into a Z-score. Keep in mind that equals 50 and equals 360.As a result,
Z = 400-360/50 = 0.80
A measure of how dispersed the data are in relation to the mean is called the standard deviation (or ).Data with a low standard deviation are grouped around the mean, while data with a high standard deviation are more dispersed.
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40 PIONTS ANSWER PLEZ IT IS NOW DUE!!!!!!
15. A triangle pattern is shown below.
Figure Perimeter
1 triangle 24
2 triangles 30
3 triangles 36
Which equation relates the number of triangles in the figure (n) to the perimeter of the figure (P)?
(1 point)
P = 6n + 18
P = 9n + 6
P = 6n + 9
P = 9n + 12
The equation that relates the number of triangles in the figure (n) to the perimeter of the figure (P) is P = 5n + 14.
We are given triangles. The triangles are arranged in a certain pattern. We need to find the relationship between the number of triangles and the perimeter of the figure. Let the perimeter of the figure having "n" number of triangles be represented by the variable "P(n)".
P(1) = 24
P(2) = 30
P(3) = 36
There is an increase of 6 units in the perimeter with every addition of a triangle. We can see and continue the pattern. The relationship between the perimeter and the number of triangles is given below.
P(n) = 18 + 6n
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Solve this system of 3 variables with elimination. Once you eliminate 1 variable to get down to only 2, you can use Desmos but show all work/steps first.
3x − 4y + z = 2
−9x + 12y − 3z = − 6
4x − 2y − z = -16
The solution of the system of the equations are; x = -2/3, y = -1/2 and z = 1.
What is an equation?An equation is an expression that shows the relationship between two or more numbers and variables.
The system of equation is given by;
3x − 4y + z = 2 ---- (1)
−9x + 12y − 3z = − 6 -------(2)
4x − 2y − z = -16 -----(3)
Now we add equations 1 from equation 3;
(3x − 4y + z ) + (4x − 2y − z ) = 2 -16
7x - 6y = -14 -----(4)
Further we multiply equation 3 by 3 and subtract from equation 2;
3(4x − 2y − z) - (−9x + 12y − 3z ) = -48 + 6
12x - 6y - 3z + 9x - 12y + 3z = 42
21x - 18y = 42-----(5)
Now we multiply equation 4 by 3 and add it to equation 4
3(-3x + 3z) + (9x + 4z) = 5×3 - 2
-9x + 9z + 9x + 4z = 15 -2
13z = 13
z = 1
Now we put z = 1 in equation number 5
-3x + 3×1 = 5
-3x + 3 = 5
-3x = 5 - 3
-3x = 2
x = -2/3
y = -1/2
Therefore, the solution of the system of the equations are; x = -2/3, y = -1/2 and z = 1.
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Please I need help please
After solving the value of x is 14.048.
Given:
KM represents an angle bisector.
Let y be the length of KM.
From the figure:
[tex]12.3^{2} = 5.4^{2} +y^{2}[/tex]
151.29 - 29.16 = [tex]y^{2}[/tex]
130.13 = [tex]y^{2}[/tex]
y = 11.407
[tex]x^{2} =8.2^{2} +11.407^{2}[/tex]
= 67.24 + 130.13
= [tex]\sqrt{197.37}[/tex]
x = 14.048.
Therefore After solving the value of x is 14.048.
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Giovanni can read 300 words per minute. If there are approximately 350 words on a page, about how many pages can he read in 2 hours?
The number of pages Giovanni can read in 2 hours is approximately 103.
How to find the number of pages he can read in 2 hours?Giovanni can read 300 words per minute. There are approximately 350 words on a page.
The number of pages he can read in 2 hours can be calculated as follows:
Therefore,
1 hour = 60 minutes
2 hours = 120 minutes.
Therefore,
1 minute = 300 words
120 minutes = ?
cross multiply
number of words he can read in 2 hours = 120 × 300 = 36000
350 words = 1 page
36000 words = ?
cross multiply
number of pages he read in 2 hours = 36000 / 350
number of pages he read in 2 hours = 102.857142857
Therefore, he read about 103 pages in 2 hours.
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Grocery Giant is having a sale on Swiss cheese, 24 slices for $7.20.
How much would it cost to buy 5 slices of cheese at the same rate?
Answer:
$1.50
Step-by-step explanation:
first, find the unit rate which is 0.3 (7.2/24)
then multiply that by 5
Your ending inventories this week for pasta were 35, 41, 32, 19, and 47 boxes. You par value is 120 and a supplier comes each night. If the cost of a box of pasta is $2. 64, then what will you be charged for pasta this week?.
The cost of a box of pasta is $2. 64, then what will you be charged for pasta this week is $1,125.
Define cost.The average cost, or how much it generally costs to produce a unit, can be discovered using the cost function. The average cost function is defined as A(x)=C(x)x, where x > 0. The average cost per unit is calculated by dividing the total cost by the number of units produced.
Given,
Your ending inventories this week for pasta were 35, 41, 32, 19, and 47 boxes. You par value is 120 and a supplier comes each night.
Par level = [(120 - 35) + (120 - 41) + (120 - 32) + (120 - 19) + (120 - 47)]
Par level = [85 + 79 + 88 + 101 + 73]
Par level = 426 units.
Charges = par level × cost
Charges = 426 × 2.64
Charges = 1,124.64
Charges ≈ $1,125
The cost of a box of pasta is $2. 64, then what will you be charged for pasta this week is $1,125.
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a.
b.
Review &
Preview
The point (21, 32) is on a line with slope 1.5.
Find the equation of the line.
Find the coordinates of another point on the line.
The slope intercept form of equation of required line is
[tex]y = \frac{3}{2}x + \frac{1}{2}[/tex]
What is equation of line in slope intercept form?
The most general form of equation of line in slope intercept form is given by y = mx + c
Where m is the slope of the line and c is the y intercept of the line.
Slope of a line is the tangent of the angle that the line makes with the positive direction of x axis.
If [tex]\theta[/tex] is the angle that the line makes with the positive direction of x axis, then slope (m) is given by
m = [tex]tan\theta[/tex]
The distance from the origin to the point where the line cuts the x axis is the x intercept of the line.
The distance from the origin to the point where the line cuts the y axis is the y intercept of the line.
Here,
Slope of the line = 1.5
The line passes through (21, 32)
Equation of required line =
[tex]y - 32 = 1.5(x - 21)\\y - 32 = \frac{3}{2}(x - 21)\\2y - 64 = 3x - 63\\2y = 3x - 63 + 64\\2y = 3x + 1\\y = \frac{3}{2}x + \frac{1}{2}[/tex]
Putting x = 1 on the line,
[tex]\frac{3}{2} \times 1 + \frac{1}{2}\\[/tex]
[tex]\frac{3 + 1}{2}\\\\\frac{4}{2}\\\\2[/tex]
(1, 2) is coordinate of another point on the line
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A publisher needs to send many books to a local book retailer and will send the books in a combination of small and large boxes. Each small box can hold 25 books and each large box can hold 35 books. A total of 15 boxes were sent which can hold 455 books altogether. Determine the number of small boxes sent and the number of large boxes sent.
The number of small boxes sent is 7 and the number of large boxes sent is 8 .
In the question ,
it is given that ,
the number of books that a small box can hold = 25 books
the number of books that a large box can hold = 35 books .
let the number of small boxes be "s" ,
So , the total number of books in s boxes will be 25s .
since the total number of boxes given is 15 ,
So , the number of large boxes = 15 - s
So , the number of books in the (15-s) large boxes = 35(15-s),
also given that total books altogether = 455 ,
According to the question ,
the equation becomes
25s + 35(15-s) = 455
25s + 35*15 - 35s = 455
525 - 10s = 455
10s = 525 - 455
10s = 70
s = 70/10
s = 7 boxes
and large boxes = 15 - 7 = 8 boxes .
Therefore , The number of small boxes sent is 7 and the number of large boxes sent is 8 .
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A rectangle with integer side length has perimeter 10. What is the greatest numbers of these rectangles that can be cut from a piece of paper with width 24 and length 60? A. 144 B. 180 C. 240 D. 360 E. 480
The greatest numbers of these rectangles that can be cut from a piece of paper with width 24 and length 60 is 360 which is option D.
Given:
A rectangle with integer side length has perimeter 10.
If the perimeter of rectangle 2(l+b) = 10
l+b = 10/2
l+b = 5.
Two choices:
1. 2 * 3 rectangle of area 6
2. 1 * 4 rectangle of area 4
The piece of paper has area 24×60 = 1440
This can be divided into rectangles with sides 2×3:
= 24/2 * 60/3
= 12*20
= 240
It can be divided into rectangles with sides 1×4:
= 24/1 * 60/4
= 24*15
= 360
Therefore the greatest numbers of these rectangles that can be cut from a piece of paper with width 24 and length 60 is 360 which is option D.
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Henry compares the number of people in two cities. City A has a population of 863,400 people. City B has a population of 322,378 people. Estimate the number of people in each city as a single digit time a power of 10. How many times greater is the population of City A than the population of City B? Show your work
Answer:
I don't know I just got the app
Step-by-step explanation:
; /
what is the volume of a 1/5 by 2/5 by 3/5 rectangle?
Using the given information, the volume of the given rectangle is 6/125 cubic units
Calculating volume of rectangleFrom the question, we are to determine the volume of the given rectangle.
From the given information,
The dimension of the rectangle is 1/5 by 2/5 by 3/5
To determine the volume of the rectangle, we will determine the product of the length of the sides of the rectangle.
That is,
Volume of the rectangle = 1/5 × 2/5 × 3/5
Volume of the rectangle = 1 ×2×3 / 5×5×5
Volume of the rectangle = 6/125
Hence, the volume is 6/125 cubic units
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Lily plans to bring beverages for the school . she has 4 liters of apple juice . Also, she will bring 3 liters of grape juice for every 10 people. How many total liters of apple juice and grape juice does she need to bring for 40 people?
Answer: 12
Step-by-step explanation: multiply it all together then divide it by the product.
find the unit rate of each of them!! help me asap it’s due today at 11:59 pm!!
the one with the Pepsi says
Coca-Cola - $1.29 for 1.25L
Pepsi - $2.49 for 2L and the Ib stands for pounds!!
The unit rate of the Coca-Cola is $ 1.032 and the unit rate of the Pepsi is $ 1.245.
Given, cost of Coca-Cola is
$1.29 for 1.25L
and cost of Pepsi is
$2.49 for 2L
we have to find the unit rate of each of the following,
As, the cost of Coca-Cola is
$1.29 for 1.25L
$1.29 = 1.25L
1 L = 1.29/1.25
1 L = $ 1.032
Now, the cost of Pepsi is
$2.49 for 2L
$2.49 = 2L
1 L = 2.49/2
1 L = $ 1.245
Hence, the unit rate of the Coca-Cola is $ 1.032 and the unit rate of the Pepsi is $ 1.245.
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What is the area of the obtuse triangle below?
Answer:
Step-by-step explanation:
1. Area for triangle. Base* Height/2
Here the base it 13 units and height is 11 units. Apply to the formula:
13*11/2=
71.5 sq units
2. Answer: 71.5 sq units