Author Question: A large university is interested in learning about the average time it takes students to drive to ... (Read 68 times)

codyclark · **on:** Feb 14, 2020

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.
H_a: 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

mcinincha279 · **Reply #1 on:** Feb 14, 2020

A FREE account is required to view all solutions!

Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.

Answer Preview

Only 25% of students answer this correctly