12. Refer to the accompanying technology display. The probabilities were obtaine
ID: 3369446 • Letter: 1
Question
12. Refer to the accompanying technology display. The probabilities were obtained by entering the values of n obtained by entering the values of n 5 and 0.766. In a clinical test ofa drug. 76.6% of the subjec each case, assume that 5 subjects are randomly selected and treated with 10 mg of the drug. Find the probability that at least four of the subjects experience headaches. Is it unusual to have fewer than four subjects experience headaches? ts treated with 10 mg of the drug experienced headaches. In Click on the icon to view the technology display The probability that at least four of the subjects experience headaches is (Round to four decimal places as needed.) Is it unusual to have fewer than four subjects experience headaches? O A. No, because the probability that fewer than four subjects will experience headaches is unlikely. No, because the probability that fewer than four subjects will experience headaches is not unlikely C. Yes, because the probability that fewer than four subjects will experience O D. Yes, because the probability that fewer than four subjects will experience headaches is unlikely. headaches is not unlikely 1: Binomial Probability display Binomial with n 5 and p 0.766 P(x-x) 0.0007 0.0115 0.0752 0.2461 0.4028 0.2637 0Explanation / Answer
Ans:
P(atleast 4)=P(x>=4)
=P(x=4)+P(x=5)
=0.4028+0.2637
=0.6665
P(fewer than 4)=1-P(x>=4)=1-0.6665=0.3335
Option B is correct.
No,probability that fewer than 4 subjects will experience headaches is not unlikely(as probability>0.05)
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