Members of fraternities and sororities are required to volunteer for community service. Do fraternity brothers work an equal number of volunteer hours on average compared to sorority sisters? The data below show the number of volunteer hours worked for eleven randomly selected fraternity brothers and twelve randomly selected sorority sisters. Brothers: 4 11 13 11 4 8 11 5 12 14 13 Sisters: 16 19 8 6 8 15 19 7 15 19 199 Assume both follow a Normal distribution. What can be concluded at the a = 0.01 level of significance level of significance? For this study, we should use [Select an answer a. The null and alternative hypotheses would be: Ho: Select an answer H₁: Select an answer b. The test statistic c. The p-value= Select an answer Select an answer ■ Select an answer Select an answer (please enter a decimal) (Please enter a decimal) (please show your answer to 3 decimal places.) (Please show your answer to 4 decimal places.)