Find the test statistic and the p-value

The weights of four randomly and independently selected bags of potatoes labeled 20 pounds were found to be 21.5, 22, 20.8, and 21.5. @ Assume Normality. a. Using a two-sided alternative hypothesis, should you be able to reject the hypothesis that the population mean is 20 pounds using a significance level of 0.057 Why or why not? The confidence interval is reported here: I am 95% confident the population mean is between 20.7 and 22.2 pounds. b. Test the hypothesis that the population mean is not 20. Use a significance level of 0.05. c. Choose one of the following conclusions: L. We cannot reject a population mean of 20 pounds. it. We can reject a population mean of 20 pounds. li. The population mean is 21.45 pounds. a. Choose the correct answer below. O) A. There is insufficient information to determine if the hypothesis should be rejected. O B. Do not reject the hypothesis, because the interval contains the proposed mean. O C. Reject the hypothesis, because the Interval contains the proposed mean. D. Reject the hypothesis, because the interval does not contain the proposed mean. ()E. Do not reject the hypothesis, because the interval does not contain the proposed mean. b. Determine the null and alternative hypotheses. Choose the correct answer below. O A. Ho: H> 20 OB, Hot p =20 O C. Hoil 20 HM = 20 The lest statistic is (Round to two decimal places as needed.)