ER wait times at a hospital were being analyzed. The previous year’s average was 128 minutes. Suppose that this year’s average wait time is 135 minutes. 1. Provide the hypotheses for this situation in...

ER wait times at a hospital were being analyzed. The previous year’s average was 128 minutes. Suppose that this year’s average wait time is 135 minutes.

1. Provide the hypotheses for this situation in plain language.

2. If we plan to collect a sample size of n = 64, what values could ¯x (sample mean) take so that we reject H0? Suppose the sample standard deviation (39 minutes) is the population standard deviation. You may assume that the conditions for the nearly normal model for ¯x are satisfied.

3. Calculate the probability of a Type 2 error.