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Author Question: A large university is interested in learning about the average time it takes students to drive to ... (Read 53 times)

codyclark

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Question 1

A random sample of n observations, selected from a normal population, is used to test the null hypothesis H0: σ2 = 155. Specify the appropriate rejection region.
Ha: σ2 > 155, n = 25, α = .10
χ2 > 15.6587
χ2 > 34.3816
χ2 > 36.4151
χ2 > 33.1963

Question 2

A large university is interested in learning about the average time it takes students to drive to campus. The university sampled 51 students and asked each to provide the amount of time they spent traveling to campus. The sample results found that the sample mean was 23.243 minutes and the sample standard deviation was 20.40 minutes. Find the rejection region for determining if the population standard deviation exceeds 20 minutes. Use α = 0.05.
◦ Reject H0 if χ2 > 71.4202
◦ Reject H0 if χ2 > 67.5048
◦ Reject H0 if z > 1.645
◦ Reject H0 if χ2 > 34.7642


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Marked as best answer by codyclark on Feb 14, 2020

mcinincha279

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codyclark

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Reply 2 on: Feb 14, 2020
Wow, this really help


mammy1697

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Reply 3 on: Yesterday
:D TYSM

 

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