Statistics Subject:

ASSIGNMENT # 9 Hypothesis Testing: 1. The effect of drugs and alcohol on the nervous system has been the subject of considerable research. Suppose a research neurologist is testing the effect of a drug on response time by injecting 100 rats with a unit dose of the drug , subjecting each to a neurological stimulus, and recording its response time. The neurologist knows that the mean response time for rats not injected with the drug ( the "control" mean) is 1.2 seconds, She wishes to test whether the mean response time for drug injected rats differs from 1.2 seconds. Set up the test of hypothesis for this experiment, using a= 0.01 X = 1.05 Seconds , s= 0.5 second2. A 1992 article in the Journal of the American Medical Association ("A Critical Appraisal of 98.6 Degrees F, the Upper Limit of the Normal Body Temperature, and Other Legacies of Carl Reinhold August Wundrlich") reported body temperature, gender, and heart rate for a number of subjects. The body temperatures for 25 female subjects follow: 97.8, 97.2, 97.4, 97.6, 97.8, 97.9, 98.0, 98.0, 98.0, 98.1, 98.2, 98.3, 98.3, 98.4, 98.4, 98.4, 98.5, 98.6, 98.6, 98.7, 98.8, 98.8, 98.9, 98.9, and 99.0. (a) Test the hypotheses Ho: p = 98.6 versus Hi: A # 98.6, using a = 0.05. Find the P-value b) Explain how the question in part (a) could be answered by constructing a two-sided confidence interval on the mean female body temperature