SOLUTION: A study was done to determine the efficacy of two different headache tablets A and B. The 2500 study participants used the two tablets (at different times) over the period of the

Algebra ->  Probability-and-statistics -> SOLUTION: A study was done to determine the efficacy of two different headache tablets A and B. The 2500 study participants used the two tablets (at different times) over the period of the       Log On


   

Question 1182140: A study was done to determine the efficacy of two different headache tablets A and B. The 2500 study participants used the two tablets (at different times) over the period of the study. Results indicated that 1,637 reported relief from tablet A, 1,748 reported relief from tablet B, and 1,122 reported relief from both tablets A and B. If a study participant is selected at random, what is the probability that he/she reported relief from tablet A or tablet B? Round your answer to four decimal places.
Answer by ikleyn(52781) About Me  (Show Source):
You can put this solution on YOUR website!
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    P(a or B) = P(A) + P(B) - P(A and B) = 1637%2F2500 + 1748%2F2500 - 1122%2F2500 = %281637+%2B+1748+-+1122%29%2F2500 = 0.9052.    ANSWER

Solved.