a credit score is used by credit agencies (such as mortgage companies and banks) to assess the creditworthiness of individuals. values range from 300 to 850, with a credit score over 700 considered to be a quality credit risk. according to a survey, the mean credit score is . a credit analyst wondered whether high-income individuals (incomes in excess of $100,000 per year) had higher credit scores. he obtained a random sample of high-income individuals and found the sample mean credit score to be with a standard deviation of . conduct the appropriate test to determine if high-income individuals have higher credit scores at the level of significance.
Answers
There is insufficient evidence to conclude that those with the high incomes are the ones that have the more credit scores.
How to carry out the hypothesis testWe have the bar x = 705.9
The value of n = 34
mean = 724 . 1
standard deviation = 83.4
the level of significance = 5 percent level
The Hypothesis formulation
The null hypothesis H0 = u 705.9
alternative hypothesis = H1 u > 705.9
The t test is given as x - u / s /√n
= (724.1 - 705.9) / (83.4 / √34)
= 1.2725
The degree of freedom = 34 - 1 = 33
The test that we have here is a right tailed test
The p value for the test is given as probability of p (t33 > t)
= 0.1064
From the solution that we have here, we can see that the p value that has been calculated is greater than the level of significance.
Given that this is the case, the decision rule would be for us not to reject the null hypothesis.
There is insufficient evidence to the claim that the high income persons have the greater credit scores.
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Related Questions
On a map of a campground, the Sleepy Bear cabin is located at (-14,-10) and the Deer Run cabin is located at (-14,-6). How far apart are the two cabins? (Just type in the number)
Answers
Answer: -4 over 0 (I think) I hope this helps a little bit
Step-by-step explanation: Finding the slope
(-14,-10) and (-14,-6)
Use your Y values and subtract them -10-(-6) or -10 + 6= -4 that will be your numerator
Use your 2 X values and subtract them -14-(-14) or -14+14=0 that will be your denominator
Slope will be -4 over 0
If x is a positive integer, this expression is equivalent to what?
Answers
Given:
[tex]\text{ Th expression is }4x^{\frac{1}{2}},\text{ x is a positive integer.}[/tex]Required:
Which option is equivalent?
Explanation:
The equivalent for is
[tex]\begin{gathered} =4x^{\frac{1}{2}} \\ =4\sqrt{x} \end{gathered}[/tex]Answer:
Option B is correct answer.
Question
Solve 2y−18x=−26 for y.
Answers
Answer:
-26
Step-by-step explanation:
what is 25 + 20x factor
Answers
Answer:
5(4x+5)
Step-by-step explanation:
25+20x
=5(5+4x)
:]
May I please get help with this. I have tried multiple times but still could not get the correct answers for them
Answers
ANSWER
[tex]\frac{2}{5}[/tex]EXPLANATION
To find the scale factor of the model to the sculpture, we have to divide one set of measurements of the model and sculpture.
Let us divide the length of the model by that of the sculpture:
[tex]\begin{gathered} \frac{10}{25} \\ \Rightarrow\frac{2}{5} \end{gathered}[/tex]That is the scale factor of the model to the real sculpture.
AGAIN PLS HELP ME I NEED IT
Answers
Answer: Yes, No, No, Yes
Step-by-step explanation:
Goal: Substitute all the ordered pairs into the equation.
1) (1,-3)
5(1) + 2(-3) = -1
5 + -6 = -1
-1 = -1
Yes
2) (2,8)
5(2) + 2(8) = -1
10 + 16 = -1
25 = -1
No
3) (-4, -6)
5(-4) + 2(-6) = -1
-20 + -12 = -1
-32 = -1
No
4) (-3, 7)
5(-3) + 2(7) = -1
-15 + 14 = -1
-1 = -1
Yes
What type of reasoning is used to find the next amount of train cars? Explain your answer.
Answers
Using an arithmetic sequence, it is found that the next amount of train cars is of 6.
What is an arithmetic sequence?For an arithmetic sequence, the difference between consecutive terms is constant, called common difference d.
The nth term of an arithmetic sequence is given by the following rule:
[tex]a_n = a_1 + (n - 1)d[/tex]
In which [tex]a_1[/tex] is the first term.
In the context of this problem, from the image, the number of train cars can be modeled by the following sequence:
(0, 2, 4, ...)
Which is an arithmetic sequence with:
A first term of 0.A common ratio of 2.Hence the next term of the sequence is given by:
4 + 2 = 6.
As 4 is the last term and 2 is the common ratio.
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A =
h(a + b)/2 solve for b
Answers
Answer: b = (−ah+2a)/h
Step-by-step explanation:
Step 1: Flip the equation.
Step 2: Add (-1)/2ah to both sides.
Step 3: Divide both sides by h/2.
Of 85 entries in the parade, 19 were
marching bands. How many entries were
not marching bands?
Answers
(5y-23) (2x+13) 47 (3x) find the values of c and y
Answers
The value of variable x and y are 24 and 19 respectively.
How to find angles?We have to find the variables x and y of the angles.
Therefore,
using angles in a triangle,
2x + 13 + 47 + 5y - 23 = 180
2x + 5y = 180 - 13 - 47 + 23
2x + 5y = 143
Using corresponding angles,
180 - (2x + 13) = 47 + 3x
180 - 2x - 13 = 47 + 3x
180 - 47 - 13 = 3x + 2x
120 = 5x
x = 120 / 5
x = 24
Hence,
2(24) + 5y = 143
5y = 143 - 48
5y = 95
y = 95 / 5
y = 19
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what is an example of data organization and analysis
Answers
The answer choices which represents an example of data organisation and analysis are;
Choice A; Drawing a pie chart to show the percentage of sunny days, rainy days, and cloudy days without precipitation.
Choice C. Running a weather station.
Choice E; Summing the number of days with precipitation, summing the number of sunny days, and summing the number of cloudy days without precipitation.
Data organisation and Analysis.The concept above as the name implies involves the process of gathering data in a bid to further carry out analysis and consequently, draw inferences from such analysis.
Therefore, the answer choices A, C and E represent such activities which involve data organisation and analysis.
Complete question:
What is an example of data organisation and analysis?
Check all that apply.
A. Drawing a pie chart to show the percentage of sunny days, rainy days, and cloudy days without precipitation
B. Rejecting extreme data
C. Running a weather station
D. Transferring the weather data to a computer application
E. Summing the number of days with precipitation, summing the number of sunny days, and summing the number of cloudy days without precipitation.
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An example of data organization and analysis include:
A. drawing a pie chart to show the percentage of sunny days rainy days and cloudy days without precipitation.
E. summing the number of days with precipitation summing the number of sunny days and summing the number of cloudy days without precipitation
What is data organization?Data organization and analysis are accomplished by a process of categorizing and organizing data based on its category and how it is studied. A is an example of data organizing and analysis.
Drawing a pie chart to display the percentage of sunny days, rainy days, and cloudy days without precipitation - in this example, data organization is done through charts and graphs, with data classification visible. e is another example.
Summing the number of days with precipitation, sunny days, and cloudy days without precipitation - in this example, data organizing is done solely through summation of numbers, with no graphs or charts to graphically portray the data.
In conclusion, the correct options are A and E.
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Which of the following activities are examples of data organization and analysis?
Check all the apply.
A. Drawing a pie chart to show the percentage of sunny days, rainy days, and cloudy days without precipitation
B. Rejecting extreme data
C. Running a weather station
D. Transferring the weather data to a computer application
E. Summing the number of days with precipitation, summing the number of sunny days, and summing the number of cloudy days without precipitation.
A diner serves a stack of potato slices that is 2.8 centimeters tall. The thickness of a potato is .35 centimeters. How many potato slices are in the stacks?
Answers
Given that a diner serves a stack of potato slices that is 2.8 centimeters tall. The thickness of a potato is 0.35 centimeters.
We have to determine the number of potato slices in the stacks.
The number of potato slices in the stack is given by:
[tex]\frac{2.8}{0.35}=8[/tex]Thus, the number of potato slices in the stack is 8.
A veterinarian recorded a cat's resting heart rate to be 120 beats over a 45-second time period. Complete the table to find the constant of proportionally in beats per minute.
Btw I'm in 7th grade
Number of Minutes: 0.25 0.5 0.75 1
Number ofHeartbeats: ? ? ?
Answers
The table will be:
Number of Minutes: 0.25. 0.5. 0.75 1
Number of heartbeats: 0.6675 1.335 2 2.67
How to calculate the value?The veterinarian recorded a cat's resting heart rate to be 120 beats over a 45-second time period. The constant will be:
= 120 / 45
= 2.67
Therefore, to find the heartbeat, we have to multiply the numbers of minutes by 2.67. This is illustrated as:
= 2.67 × 0.25 = 0.6675
This illustrates the concept of multiplication.
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If the assumptions for the large sample confidence interval for the population proportion are not met, what adjustments can be made?.
Answers
A confidence interval is made up of the mean of your estimate plus and minus the estimate's range. This is the range of values you expect your estimate to fall within if you repeat the test, within a given level of confidence.
A 95% confidence interval gives you a 5% chance of being wrong. A 90% confidence interval gives you a 10% chance of being wrong. In comparison to a 99% confidence interval, a 95% confidence interval is smaller (for example, plus or minus 4.5 percent instead of 3.5 percent).
When constructing a confidence interval for a propotion, if the condition of proportion requires 10 individuals in each category is not met, then confidence interval should be adjusted.
The number of individuals in each category is increased by 2 and sample size increases by 4.
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Please help me find out what 758x92 is
Answers
Answer:69736
Step-by-step explanation:
is the answer
If Sarah needs 3 cups of flour for 2 batches of cookies, How many cups of flour would she need for 18 batches of cookies?
Answers
Answer:
24 = 18
Step-by-step explanation:
3 cups = 2 cookies
Meaning she needs 24 cups of flower for 18 cookies
A retired couple invested $8000 in bonds. At the end of one year, they received an interest payment of $456. What was the simple interest rate of the bonds?
Answers
5.7%
Explanaton:let amount invested = Principal = $8000
time = 1 year
rate = ?
Interest = $456
To get the rate, we'll apply simple interest formula:
[tex]\begin{gathered} I\text{ = PRT} \\ I\text{ = interest, P = principal, R = rate, T = time} \end{gathered}[/tex][tex]\begin{gathered} 456\text{ = 8000}\times R\times1 \\ 456\text{ = 8000R} \\ \text{divide both sides by 8000:} \\ \frac{456}{8000}\text{ =}\frac{8000R}{8000} \\ \\ R\text{ = 0.057} \\ In\text{ percent, rate = 0.057}\times100 \\ \text{Rate = 5.7\%} \end{gathered}[/tex]Hence, the simple rate of the bonds is 5.7%
Using Pythagoras' Theorem please solve it.
Answers
[tex] \huge\underline\mathcal{Answer \: - }[/tex]
Pythagoras theorem states that the square of hypotenuse equals the sum of square of other two sides.
therefore ,
[tex](25) {}^{2} = (x + 3) {}^{2} + 4 { }^{2} (x + 2) {}^{2} \\ \\ \longrightarrow \: 625 = x {}^{2} + 9 + 6x + 16(x {}^{2} + 4 + 4x) \\ \\ \longrightarrow \: 625 = x {}^{2} + 9 + 6x + 16x {}^{2} + 64x + 64 \\ \\ \longrightarrow \: 625 = 17x {}^{2} + 70x + 73 \\ \\ \longrightarrow \: 17x {}^{2} + 70x + 73 - 625 = 0 \\ \\ \longrightarrow \: 17x {}^{2} + 70x - 552 = 0[/tex]
now using quadratic formula ,
[tex]x = \frac{ - b \: \pm \: \sqrt{b {}^{2} - 4ac} }{2a} \\ [/tex]
here , a = 17 , b = 70 , c = -552
substituting the values in the equation above ,
[tex]x = \frac{70 \: \pm \: \sqrt{70 {}^{2} - 4(17)( - 552)} }{2 \times 17} \\ [/tex]
after simplifying we get ,
[tex]\boxed{x = 4} \: \: or \:\boxed{ x = \frac{ - 138}{7} } \\ [/tex]
since length can't be negative , therefore the other value will be neglected and hence ,
[tex]\boxed{value \: of \: x \: = \: 4 \: cm}[/tex]
hope helpful ;-;
======================================================
Work Shown:
As you mentioned, we'll use Pythagoras' Theorem aka Pythagorean Theorem.
[tex]a^2+b^2 = c^2\\\\(x+3)^2+(4(x+2))^2 = 25^2\\\\(x+3)^2+16(x+2)^2 = 625\\\\(x^2+6x+9)+16(x^2+4x+4) = 625\\\\x^2+6x+9+16x^2+64x+64 = 625\\\\17x^2+70x+73 = 625\\\\17x^2+70x+73-625 = 0\\\\17x^2+70x-552 = 0\\\\[/tex]
Next, we'll use the quadratic formula with a = 17, b = 70, c = -552.
[tex]x = \frac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\x = \frac{-70\pm\sqrt{(70)^2-4(17)(-552)}}{2(17)}\\\\x = \frac{-70\pm\sqrt{42436}}{34}\\\\x = \frac{-70\pm206}{34}\\\\x = \frac{-70+206}{34} \ \text{ or } \ x = \frac{-70-206}{34}\\\\x = \frac{136}{34} \ \text{ or } \ x = \frac{-276}{34}\\\\x = 4 \ \text{ or } \ x \approx -8.1176\\\\[/tex]
Ignore the negative x value solution. The sides (x+3) and 4(x+2) will be negative values if we plugged in x = -8.1176, but negative side lengths do not make sense.
This makes x = 4 the only possible solution.
----------------
If x = 4, then,
vertical leg = x+3 = 4+3 = 7horizontal leg = 4(x+2) = 4*(4+2) = 4*6 = 24This is a 7-24-25 right triangle.
We can confirm this using the pythagorean theorem
[tex]a^2+b^2 = c^2\\\\7^2+24^2 = 25^2\\\\49+576 = 625\\\\625 = 625 \ \ \ \checkmark[/tex]
Select the correct answer.
-
The function f(x) has been transformed to give g(x). Which of the following functions represents g(x)?
A. 9(z) = 2z²
B. 9(2) = () z²
C. g(z)=()=²
D. g(z) = 42²
Answers
c.
Step-by-step explanation:
you can check the the correct answer by giving tables value for eg f(x)= 2 g(f(x))= 1/2(2)²=2
as you can see in the graph g(x) (2,2)
For the data in the table, write an equation for the direct variation.
Answers
The equation of direct variation is,
[tex]\begin{gathered} y=kx \\ k=\frac{y}{x} \end{gathered}[/tex]Substitute the values of y and x.
[tex]\begin{gathered} k=\frac{5.4}{4} \\ k=1.35 \end{gathered}[/tex]So, the obtained equation will be y=1.35(x).
Let's check with the values of x.
1) If x=4
[tex]\begin{gathered} y=1.35x \\ y=1.35(4) \\ y=5.4 \end{gathered}[/tex]2) If x=2
[tex]\begin{gathered} y=1.35x \\ y=1.35(2) \\ y=2.7 \end{gathered}[/tex]3) If x=-2
what is 0.4111111… as a fraction
Answers
Take 0.41111... as x
Thus 10x = 4.11111... and 100x= 41.1111...
=> 100x - 10x = 41.1111... - 4.111111
=> 90x=37
=> x= 37/90
=> 0.4111... = 37/90
3 movie tickets cost $36. At this rate, what is the cost per ticket?
Answers
Answer:
12
Step-by-step explanation:
36 divided by 3 is 12
Question 5Which of the following is equivalent to (2 – 2) (x - 1)
Answers
Which system is responsible for carrying this oxygen to the muscles?
Answers
Answer:
The circulatory system
Step-by-step explanation:
Is this math? lol
:]
What is the value of V?
V-22+v+32+v=180
Answers
V-22+v+32+v=180
V+v+v=170
3v=170
v=56.67
In the figure ZX = 2x + 1 YW = 3x - 1 and YX = 1, find perimeter of VYZ
Answers
The perimeter of triangle VYZ is 12 units.
How to find the perimeter of a triangle?The perimeter of a triangle is the sum of the whole sides of the triangle.
In other words, the perimeter of a triangle is the total distance covered by its boundaries or the sides.
Therefore,
perimeter of ΔVYZ = VY + ZY + ZV
Therefore,
VY = ZY = ZV = XW
Hence,
YW = YX + XW
Therefore,
XW = YW - YX
YW = 3x - 1
YX = 1
Hence,
XW = 3x - 1 - 1
XW = 3x - 2
Therefore,
perimeter of ΔVYZ = 3x - 2 + 3x - 2 + 3x - 2
perimeter of ΔVYZ = 9x - 6
ZX = YW
2x + 1 = 3x - 1
2x - 3x = - 1 - 1
-x = -2
x = 2
Therefore,
perimeter of ΔVYZ = 9(2) - 6
perimeter of ΔVYZ = 18 - 6
perimeter of ΔVYZ = 12 units
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0.8-2x=-1.4
Solve for x
Answers
Answer:
x= -0.3
Step-by-step explanation:
0.8-2x=1.4 Set up equation
-2x=1.4-0.8 Put Like terms together
-2x=0.6 Subtract like terms
x=0.6/-2 Divide
x=-0.3 Answer
Choose the statements that are true about a cube with side length 1 unit.
It has a volume of 6 cubic units.
It has a volume of 1 cubic unit.
It has a volume of 3 cubic units.
It is called a "one block."
It can be used to measure volume.
It is called a "unit cube."
Answers
The answer to the mentioned statement are :
first statement is WRONG
the second statement is RIGHT
The third statement is also WRONG
the fourth statement is RIGHT
fifth statement is RIGHT
sixth statement is WRONG
The side of the given cube is 1 unit.
This means that the Length= Breadth = Height = 1 unit because it is cube
This means that the volume can be described as
( side ) ³
that is 1 × 1 × 1 = 1 cubic unit
thus the first statement is WRONG
However the second statement is RIGHT
The third statement is also WRONG
since it is a cube whose volume is 1 cubic unit
thus we can say that it is one block
Thus the fourth statement is RIGHT
fifth statement is RIGHT
sixth statement is WRONG
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PLS PLS HELP ASAP!!!
translate the image using the rule below
Answers
Answer:
t=(1,-3) c=(-2,-2) r=(-3,-5)
Step-by-step explanation:
add 2 to each x value and subtract 4 from each y value
Determine if the relation is a
function. Use set builder and
interval notation for the
domain and range.
Function: Yes No
Domain:
Range:
Answers
Answer:
It would be helpful if you add more info on the question
Step-by-step explanation: