Question 1 The average rainfall last year was at least 13.5 cm. An environmental group believes that the average rainfall has fallen. With a sample of 65 days, they found and average rainfall of 11.5 cm. The population standard deviation is known to be 5.5 cm. Test the hypothesis that the average rainfall has decreased at the 0.05 level of significance. Is this a one or two tail hypothesis test? (Enter \"1\" or \"2\"} S Question 5 Refer to the data in question 1. Calculate the p-value. (Round answer to 4 decimal places) S