Tara is an editor for a weekly magazine. She is testing whether the number of advertisements in the magazine has increased in the past few years. Historically, the magazine has had a mean of 83.22 advertisements per issue with a standard deviation of 6.51 advertisements. The editor randomly selected 30 issues from the past two years and counted the number of advertisements for each issues. The editor conducts a one-mean hypothesis at the 5% significance level, to test if the average number of ads in a magazine is greater than 83.22 ads. (a) H0:=83.22; Ha:>83.22, which is a right-tailed test. (b) The number of ads per magazine are given below. Using the historical standard deviation as the population standard deviation, use Excel to test whether the mean number of advertisements has increased. Calculate the test statistic, z, rounding to two decimal places, and the p-value, rounding to three decimal places