b. Construct a confidence interval appropriate for the hypothesis test in part (a). (Round to three decimal places as needed.) 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