Aunion of restaurant and foodservice workers would like to estimate this year's mean hourly wage, , of foodservice workers in the u. s. last year's mean hourly wage was , and there is reason to believe that this year's value is greater than last year's. the union decides to do a statistical test to see if the value has indeed increased. the union chooses a random sample of this year's wages, computes the mean of the sample to be , and computes the standard deviation of the sample to be . based on this information, answer the questions below. what are the null hypothesis () and the alternative hypothesis () that should be used for the test