9. The number of minutes that it takes for students to commute to class during the week follows a normal distribution with mean 20 and standard deviation 4. I go around the nation taking samples of 100 people at a time and asking how long they take to get to class. For each group of 100 people, I take the mean of the times I recorded. I do this until I feel confident that I can estimate the sampling distribution of the mean amount of time it takes for people to get to class. Which graph below is the best representation of what we would expect the sampling distribution of the sample mean to look like? O O 8 8 8. 8 8 a 2 g 5 18.5 10 19.0 15 19.5 Normal Density 20 y Normal Density 20.0 Y 25 20.5 30 21.0 35 21.5 O 2 8 8 8. -150 2- SO -100 -50 Normal Density 0 50 Normal Density 100 150
9. The number of minutes that it takes for students to commute to class during the week follows a normal distribution with mean 20 and standard deviation 4. I go around the nation taking samples of 100 people at a time and asking how long they take to get to class. For each group of 100 people, I take the mean of the times I recorded. I do this until I feel confident that I can estimate the sampling distribution of the mean amount of time it takes for people to get to class. Which graph below is the best representation of what we would expect the sampling distribution of the sample mean to look like? O O 8 8 8. 8 8 a 2 g 5 18.5 10 19.0 15 19.5 Normal Density 20 y Normal Density 20.0 Y 25 20.5 30 21.0 35 21.5 O 2 8 8 8. -150 2- SO -100 -50 Normal Density 0 50 Normal Density 100 150
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:9. The number of minutes that it takes for students to commute to class during the week follows a
normal distribution with mean 20 and standard deviation 4. I go around the nation taking samples of
100 people at a time and asking how long they take to get to class. For each group of 100 people, I
take the mean of the times I recorded. I do this until I feel confident that I can estimate the sampling
distribution of the mean amount of time it takes for people to get to class. Which graph below is the
best representation of what we would expect the sampling distribution of the sample mean to look
like?
O
O
8
8
8.
8
8
a
2
g
5
18.5
10
19.0
15
19.5
Normal Density
20
y
Normal Density
20.0
Y
25
20.5
30
21.0
35
21.5
O
2
8
8
8.
-150
2-
SO
-100
-50
Normal Density
0
50
Normal Density
100
150
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