Use the information below to answer questions 27 and 28. Consider again the NCHS-reported mean total cholesterol level in 2002 for all adults is 2003. Suppose a new drug is proposed to lower total cholesterol. A study is designed to evaluate the ecacy of the drug in lowering cholesterol. Fifteen patients are enrolled in the study and asked to take the new drug for 6 weeks. At the end of 6 weeks, each patient’s total cholesterol level is measured and the sample statistics are as follows:n = 15, x̄ = 195.9, and s = 28.7. Is there statistical evidence of a reduction in mean total cholesterol in patients after using the new drug for 6 weeks? 27. The test statistic to be used is ........................................... and the hypotheses to test are? (i). ........................................................................... (ii)................................................................................. 28. Given that the table or the critical value is -2.145, do we accept or reject the null hypothesis and why?
Use the information below to answer questions 27 and 28. Consider again the NCHS-reported
27. The test statistic to be used is ........................................... and the hypotheses to test are?
(i). ........................................................................... (ii).................................................................................
28. Given that the table or the critical value is -2.145, do we accept or reject the null hypothesis and why?........................................................................... ...............................................................................................
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