Question

9. The probability of flu symptoms for a person not receiving any treatment is 0.036. In a clinical trial of a common drug used to lower​ cholesterol, 42 of 1089 people treated experienced flu symptoms. Assuming the drug has no effect on the likelihood of flu​symptoms, estimate the probability that at least 42 people experience flu symptoms. What do these results suggest about flu symptoms as an adverse reaction to the​ drug?

A. P(X≥4242​) =

(Round to four decimal places as​ needed.)

11. Assume 45​% of us have Group O blood. A hospital is conducting a blood drive because its supply of Group O blood is​ low, and it needs at least 152 donors of Group O blood. If 299 volunteers donate​ blood, estimate the probability that the number with Group O blood is at least 152. Is the pool of 299 volunteers likely to be​ sufficient?

P(x (X≥152)=

(Round to four decimal places as​ needed.)

Answer 1