Solve the problem. A large university is interested in learning about the average time it takes students to drive to campus. The university sampled 35 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. At 0.05 significance level, test the claim that the population standard deviation exceeds 20 minutes.

Find the

Null hypothesis
Alt hypothesis
Type of test
Estimate critical value
Test statistic
P-value
Decision
Final conclusion