Aresearcher wants to know if the average time in jail for robbery has increased from what it was several years ago when the average sentence was 7 years. he obtains data on 400 recent robberies and finds an average time served of 7.5 years. if we assume the standard deviation is 3 years, perform a significance test (calculating the p-value) at the 0.05 level.

Pleasse me i need an answer. give me the correct answer. answer if you know it ! the club will base its decision about whether to increase the budget for the indoor rock climbing facility on the analysis of its usage. the decision to increase the budget will depend on whether members are using the indoor facility at least two times a week. use the best measure of center for both data sets to determine whether the club should increase the budget. assume there are four weeks in a month. if you think the data is inconclusive, explain why.