please help!

1. We have the following data: 5.6, 4.6, 4.5, 3.7, 3.2, 2.7 Calculate the mean. O 24.3 0 6 0 4.05 O 4.86 O none of these SAVE VIEW CORRECT ANSWER2. We have the following data: 5.6, 4.6, 4.5, 3.7, 3.2, 2.7 Calculate the variance. 0 5.575 0 1.115 05 0 0.9292 O none of these3. We have the following data: 5.6, 4.6, 4.5, 3.7, 3.2, 2.7 Calculate the standard deviation. O 1.0559 O 2.3611 O 2.236 0 0.964 O none of these\f5. Test if the population mean is 5.0. use alpha = .05. What is the null and alternative hypotheses? O Ho: H = 5 vs. Ha: H 5 O Ho: H = 5 vs. Ha: p # 5 O none of these6. Test if the population mean is 5.0. use alpha = .05. What is the test statistic value? T = ? O -2.204 O -5.398 O -0.95 O none of these7. Test if the population mean is 5.0. use alpha = .05. What is the critical value? O 1.96 O 2.571 O 2.776 O 1.645 O none of these8. Test if the population mean is 5.0. use alpha = .05. What is the correct decision? O Reject Ho O Do not reject Ho SAVE VIEW CORRECT ANSWER 9. Test if the population mean is 5.0. use alpha = .05. What is the conclusion? O There is enough evidence to say that we cannot reject Ho. O There is not enough evidence to say the mean is different from 5.0. O There is enough evidence to say the mean is different from 5.0. O The mean is not 5