The values are missing in the question. They are : 16.3,12.8,13,32.2,28.1,34.4,46.4,53,15.4,18.2
Step-by-step explanation:16.3,12.8,13,32.2,28.1,34.4,46.4,53,15.4,18.2
We calculate sample mean and std deviation from given data.
Sample Mean, =269.8/10=26.98
Sample Variance, =1859.496/9=206.610667
Sample std dev,s==√206.610667≈14.373958
We want to test two tailed hypothesis:
: σ=12
: σ≠12
Given: s=14.373958⇒ =206.610667,n=10
Significance level, a=0.1 Degrees of freedom, df=n-1=9
Since this is two tailed test, we need area of α=0.1 on either side of critical value. This means area of 0.05 on right of positive critical value.
Critical values are given by with 9 degrees of freedom.
We can use chi-square table or following excel commands:
CHISQ. INV(0.95,9)=3.32511284307
CHISQ. INV (0.05,9)=16.9189776046
Critical Values, =3.325 and =16.919
Since this is two tailed test, the decision rule or rejection criteria is:
Reject null hypothesis if test statistic is less than or equal to left critical value OR more than or equal to right critical value, i.e,
Reject if ≤3.325 OR ≥16.919
Test statistic is given by =((9)*206.610667)/144=12.913167
Test statistic, =12.913
since test statistic is between two critical values, we (do not reject ) (i.e, we fail to reject .
Conclusion: There is (not sufficient) evidence to conclude that standard deviation is not equal to 12 .
Alternatively, we can use p-value approach. The decision rule or rejection criteria is: reject null hypothesis if p-value is less than or equal to significance level (α), i.e, reject if p-value ≤0.1
P-value is twice the (smaller) tail area of test statistic because this is two tailed test. We can use excel function to find this. 2*M IN (CHISQ.DIST (12.913167,9, TRUE ) 1-CHISQ.DIST 12.913167,9, TRUE ) =0.333149809868
P-value =0.3331
since p-value is greater than significance level (α),we (do not reject ) (i.e, we fail to reject ).
Conclusion: There is (not sufficient) evidence to conclude that standard deviation is different from 12 .
Wow...I forgot how to do this please help
Answer:
B. y = -6x+7
Step-by-step explanation:
change in x is positive 6 change in y is negative 1
6/-1 is the slope
-6 is the slope
Unit 3 Homework 6 Geometry
I need help for 21 &22
Answer:
22
Step-by-step explanation:
222÷11 =22
22 ÷111 =000⁰00
Help plz:))) I’ll mark u brainliest
ASAP!!!
Answer:
16=x
Step-by-step explanation:
the two sides are equal, soo i set them equal to each other and add 18 to 16 then divide each side by two and get 16 = x
Write a diameter of 7.024 x 10-5 centimeter in standard notation.
Answer:
[tex]0.00007024[/tex] cm
Step-by-step explanation:
Standard notation just mean to expand the number.
Because the exponent is -5, move the decimal 5 places to the left.
[tex]7.024*10^{-5}[/tex]
[tex]0.00007024[/tex]
Hope this helped!
A triangle with the side lengths of 8, 15, 17.5 form a right triangle:
A. True
B. False
C. Sometimes
D. None of the above
I would appreciate the help.
It's true, just draw the sides and you'll see there's no other angle you could get.
In a survey of 2,800 people who owned a certain type of car, 840 said they would buy that type of car again. What percent of the people surveyed were satisfied with the car?
Answer:
30% of people surveyed were satisfied with the car.
Step-by-step explanation:
We are given:
Total participants in survey= 2800
People satisfied with car = 840
We need to find percent of the people surveyed were satisfied with the car.
The formula used is: [tex]\frac{People \ satisfied \ with \ car}{Total \ participants \ in \ survey} \times 100[/tex]
[tex]=\frac{840}{2800}\times 100\\=30\%[/tex]
So, 30% of people surveyed were satisfied with the car.
Kayleigh has 3 1/2 gallons of water. She wants to fill up 1/3 cups. How many cups can she fill and how much is left over?
Answer:
10.5
Step-by-step explanation:
Which two points are on the graph of W(d) = 5d – 30?
Choose exactly 2 awnsers that are correct
0, 30
0, -30
-6, 0
6, 0
Im pretty sure its
(6, 0)
(0, –30)
I could be wrong though..
What is the multiplicative inverse of 1/2?
2
-1/2
-2
Answer:
-2/1
Step-by-step explanation:
Answer:
The multiplicative inverse is 2
Step-by-step explanation:
In mathematics, we call the number 1 the multiplicative identity because if we multiple any number by 1, we get that same number as our answer. A multiplicative inverse of a number, x, is a number y, such that if we multiply x times y, then we get the multiplicative identity. That is, x × y = 1.
-3n^2-13n +1= 0
need this asap. i’m lost.
Answer:
if you're trying to find the discriminant, then it's 181.
Step-by-step explanation:
The area of a circle is equal to ___ times the ____ of its _____
Answer:
The area of a circle is equal to pi times the square of its Radius
Step-by-step explanation:
Answer:
Pie, Diameter, Circle
Step-by-step explanation:
−
2
x
4
+
20
x
3
+
48
x
2
−2x
4
+20x
3
+48x
2
Answer: =296
Step-by-step explanation: −2*4=-8+20=28*3=84+48=132*2=164−2=162*4+20*3+48*2= 296
2. Suppose there are 50 cats in a neighborhood. The ratio of cats to dogs is 2/1 . many dogs are in the neighborhood? (4 points)
what is p^m ÷ by p^n equal to?
Answer:
hbbbbb
Step-by-step explanation:cvv cv
Justin uses į of a gallon of paint to cover of his bedroom wall.
How much paint is needed to cover the entire wall?
it depends what is the size of the wall and how much can be covered with 1 gallon .
The figures are similar. Find the missing length. Round to the nearest thousandth. (Hint: this is actually a reduction, the shape is misleading).
Answer:
x = 3.125 ft
Step-by-step explanation:
[tex]\frac{5}{x}=\frac{8}{5} \\8x = 25\\x = \frac{25}{8}=3.125[/tex]
Mrs. MaryAnn is giving treat sacks out for Valentines Day. She has 30 pencils and 42 smiley face stickers. Mrs. Maryann wants each treat sack to be identical with no leftovers Whats the greatest number of treat sacks she can make? How many pencils will be in each treat sack? How many smiley face stickers will be in each treat sack?
Answer:
6 number treat sacks and
each sack having 5 pencils and 7 smiley face stickers.
Step-by-step explanation:
Given that:
Number of pencils = 30
Number of smiley face stickers = 42
Mrs. MaryAnn wants to divide everything in identical treat sacks so that there are no leftovers.
To find:
The number of greatest number of treat sacks.
Solution:
First of all, we need to find the Highest Common Factor of the two numbers.
Factorization method:
[tex]30 = \underline2\times \underline3\times 5[/tex]
[tex]42 = \underline2\times \underline3 \times 7[/tex]
Here, the common numbers 2 and 3.
So, highest common factor is [tex]2\times 3 = 6[/tex]
If we divide 30 by 6, we get 5 and
If we divide 42 by 6, we get 7
So, if we take 5 pencils and 7 smiley face stickers in one treat sack and if we make 6 such treat sacks then there will be equal division and no leftovers.
Therefore, the answer is:
6 number treat sacks and
each sack having 5 pencils and 7 smiley face stickers.
1. Which expression has a value of 30 when x = -1 and y = 3? A. (x - 3^2) · y - 6 B. (x - 3^2) · (y - 6) C. x - 3^2 · (y - 6) D. x - 3^2 · y - 6
Answer:
B. (x - 3²)(y-6)
Step-by-step explanation:
Find the expression with a value of 30;
when x = -1 and y = 3:
A. (x - 3²).y-6
(-1 - 9).3-6 = -10 x 3 -6 = -30 - 6 = -36
B. (x - 3²)(y-6)
( -1 -3²)(3 - 6) = (-1 -9)(-3) = 30
C. x - 3² . (y-6) = -1 - 9.(3-6)
= -1-9.-3
= -1 - 9 x -3
= -1 + 27
= 26
D. x - 3².y-6 = -1 - 9. 3 - 6
= -1 - 27 - 6
= -34
4 + y =36+65x85 help what y
Answer:
8411?
Step-by-step explanation:
I am not entirely sure because you put an x without any spaces soo I don't know if that supposed to be a variable or multiplication sign. If its a multiplication sign then its 8411 because 36+65=99. 99 x 85=8415. 8415 - 4 = 8411.
Answer:
|2y|=3+2
3ˣ⁺⁴=4
4cos²([tex]x[/tex])-1=0
Step-by-step explana|tion:
use the digits 4,5, and 6 to write a number in with 4 has a value of 400.
Answer:
456
Step-by-step explanation:
456 = 4*100 + 5*10 + 6
so 4 represents 400 here
What is the best estimate of the perimeter of the figure below if each square has a side length of 1 foot?
On a coordinate plane, a figure is 30 units around.
26 feet
28 feet
30 feet
39 feet
Answer:
A
Step-by-step explanation:
perimeter- 26
What is the correct answer for all of them?
Answer:
i wish i could tell ya bud but i cant see the image
Step-by-step explanation:
its blocked off for me
If an airplane travels at an average speed of 510 mph, how far does the airplane move in 50 minutes?
Answer:
425 miles
Step-by-step explanation:
Divide 510 by 60 to get miles per minute and then multiply by 50 to get miles in 50 minutes
The airplane move 425 miles in 50 minutes.
what is Speed- Distance Formula?Speed = Distance/TimDistance = Speed X Time, and Time = Distance / SpeedGiven:
Speed= 510 mph
Time= 50 min = 50/60 hour.
So, speed= Distance / Time
510 = Distance / (5/6)
510 x 5/6 = Distance
Distance = 425 miles
Hence, the Airplane travel 425 miles.
Learn more about speed distance formula here:
https://brainly.com/question/26209051
#SPJ2
y = x + 1
y=-x + 5
is there an ordered pair that is a Solution to both of these linear equation?
Explain your thinking
[tex]y=x+1[/tex]
[tex]y=-x+5[/tex]
[tex]x+1=-x+5[/tex]
[tex]2x=4[/tex]
[tex]x=2[/tex]
[tex]y=x+1[/tex]
[tex]y=2+1=3[/tex]
The ordered pair is [tex](2,3)[/tex].
Hope this helps.
I will give brainliest
Answer:
36
Step-by-step explanation:
16*(9/4)
B is smaller than A in a ratio of 4/9, means that A is larger than B in ratio of 1/(4/9) = 9/4.
If the company decides to produce 10,000 containers of new extra crunchy peanut butter how many containers of regular crunchy would it produce
Answer:
Step-by-step explanation:
solve for x -5(-x+1)-3x-1=-12
Answer:
x = -2
General Formulas and Concepts:
Order of Operations: BPEMDAS
Step-by-step explanation:
Step 1: Define equation
x - 5(-x + 1) - 3x - 1 = -12
Step 2: Solve for x
Distribute -5: x + 5x - 5 - 3x - 1 = -12Combine like terms: 3x - 6 = -12Add 6 to both sides: 3x = -6Divide 3 on both sides: x = -2Step 3: Check
Plug in x to verify it's a solution.
Substitute: -2 - 5(-(-2) + 1) - 3(-2) - 1 = -12Multiply: -2 - 5(2 + 1) + 6 - 1 = -12Add: -2 - 5(3) + 6 - 1 = -12Multiply: -2 - 15 + 6 - 1 = -12Subtract: -17 + 6 - 1 = -12Add: -11 - 1 = -12Subtract: -12 = -12Can someone please help I'm stupid
1.25x - 6.50 > 60
Answer:
x>53.2
Step-by-step explanation:
Tell whether the ratios form a proportion.
3/4, 24/18
yes or no?
(also i give out branist or whatever lol)
The first new path will increase access to the fountain. it will be perpendicular to the existing path and pass through F(4,14). Write an equation that represents this new path l. Enter the correct answer in the box. Substitute numerical values into the expression for all known variables.
Answer:
y=1/4x+13
Step-by-step explanation: