Identify the P-value. P-value= (Round to three decimal places as needed.) What is the conclusion based on the hypothesis test? The P-value is less than the significance level of a=0.01, so reject greater than the null fail to reject hypothesis. There is not sufficient evidence to support the claim that echinacea treatment has an effect. is b. Test the claim by constructing an appropriate confidence interval. The 99% confidence interval is Because the confidence interval limits include 0, there does not appear to be a do not include does significant difference between the two proportions. There is not evidence to support the claim that echinacea treatment has an effect. c. Based on the results, does echinacea appear to have any effect on the infection rate? OA. Echinacea does appear to have a significant effect on the infection rate. There is evidence that it lowers the infection rate. OB. Echinacea does not appear to have a significant effect on the infection rate. OC. Echinacea does appear to have a significant effect on the infection rate. There is evidence that it increases the infection rate. OD. The results are inconclusive. Data on the weights (lb) of the contents of cans of diet soda versus the contents of cans of the regular version of the soda is summarized to the right. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. Use a 0.05 significance level for both parts. Diet Regular H1 H2 n 31 31 x 0.78651 lb 0.81455 lb S 0.00439 lb 0.00752 lb b. Construct a confidence interval appropriate for the hypothesis test in part (a). (Round to three decimal places as needed.)