In a clinical trial of 2095 subjects treated with a certain drug, 28 reported headaches. In a control group of 1631 subjects given a placebo, 26 reported headaches. Denoting the proportion of headaches in the treatment group by p, and denoting the proportion of headaches in the control (placebo) group by pc, the relative risk is p /pc. The relative risk is a measure of the strength of the effect of the drug treatment. Another such measure is the odds ratio, which is the ratio of the odds in favor of a headache for the treatment group to the odds in favor of a headache for the control (placebo) Pt! ( 1 - Pt ) group, found by evaluating The relative risk and odds ratios are commonly used in medicine and Pc! (1 - Pc ) epidemiological studies. Find the relative risk and odds ratio for the headache data. What do the results suggest about the risk of a headache from the drug treatment? Find the relative risk for the headache data. The relative risk = (Round to three decimal places as needed.) Find the odds ratio for the headache data. The odds ratio = (Round to three decimal places as needed.) What do the results suggest about the risk of a headache from the drug treatment? A. The drug does not appear to pose a risk of headaches because p, is slightly less than Pc. O B. The drug appears to pose a risk of headaches because p, is greater than Pc. O C. The drug has no risk because the relative risk and odds ratio are almost equal. O D. The drug appears to pose a risk of headaches because the odds ratio is greater than 1.0.Find the area of the shaded region. The graph to the right depicts IQ scores of adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15. Click to view page 1 of the table. Click to view page 2 of the table. 90 125 The area of the shaded region is . (Round to four decimal places as needed.)\fStandard Normal Table (Page 2) 1.4 9192 9207 9222 9236 9251 19265 .9279 .9292 9306 .9319 1.5 9332 9345 9357 9370 9382 .9394 .9406 9418 .9429 9441 1.6 9452 9463 9474 9484 9495 9505 9515 9525 .9535 .9545 1.7 9554 .9564 .9573 9582 .9591 9599 .9608 9616 .9625 .9633 1.8 9641 .9649 .9656 .9664 19671 9678 9686 9693 9699 9706 1.9 9713 9719 .9726 9732 9738 9744 9750 9756 9761 .9767 2.0 .9772 9778 .9783 9788 9793 .9798 .9803 .9808 .9812 .9817 2.1 .9821 .9826 .9830 9834 9838 9842 9846 .9850 9854 .9857 2.2 9861 9864 9868 9871 .9875 9878 .9881 9884 .9887 .9890 2.3 9893 9896 9898 .9901 .9904 .9906 .9909 .9911 9913 9916 2.4 19918 9920 9922 19925 .9927 .9929 19931 9932 9934 9936 2.5 9938 9940 9941 9943 9945 .9946 9948 19949 19951 9952 2.6 .9953 9955 9956 9957 9959 9960 9961 9962 .9963 .9964 2.7 .9965 9966 19967 ,9968 .9969 .9970 .9971 9972 9973 9974 2.8 .9974 9975 9976 9977 .9977 .9978 .9979 19979 9980 .9981 2.9 9981 9982 9982 9983 .9984 .9984 .9985 9985 9986 9986 3.0 9987 9987 9987 .9988 19988 .9989 .9989 .9989 9990 .9990 3.1 9990 9991 9991 9991 .9992 .9992 .9992 9992 .9993 9993 32 9993 9993 9994 9994 .9994 9994 .9994 .9995 .9995 .9995 3.3 9995 9995 9995 9996 9996 9996 .9996 9996 9996 9997 34 9997 9997 9997 9997 9997 9997 9997T 9997 9997 9998 3.50 .9999 and up NOTE: For values of z above 3.49, use 0.9999 for the area Common Critical Value "Use these common values that result from interpolation: Confidence | Critical z score Area Level Value 1.645 0.9500 0.90 1.645 2.575 0,9950 0.95 1.96 0.99 2.575