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It is believed that 90 percent of the population of all students consider statistics to be...

It is believed that 90 percent of the population of all students consider statistics to be an exciting subject. Suppose we randomly and independently selected 20 students from the population. Find the probability that at least 15 of these students consider statistics to be an exciting subject Select one: a. 1−[P(0)+...+P(15)] 1−[P(0)+...+P(15)] b. 1−[P(0)+...+P(14)] 1−[P(0)+...+P(14)] c. P(0)+...+P(14) P(0)+...+P(14) d. P(0)+...+P(15)

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Answer #1

Ans b)

explanation:

At least 15 means

minimum 15dtudents are exciting ..

Find [p(15)+p(16)+p(17)+p(18)+p(19)+p(20)]

o.w find 1-[P(1)+p(2)+.......+p(14)]

both are same

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