Question

In: Statistics and Probability

Although studies continue to show smoking leads to significant health problems, 30% of adults in a...

Although studies continue to show smoking leads to significant health problems, 30% of adults in a country smoke. Consider a group of 250 adults, and use the normal approximation of the binomial distribution to answer the questions below.

(a)What is the expected number of adults who smoke?

75  adults

(b)What is the probability that fewer than 65 smoke? Use the normal approximation of the binomial distribution to answer this question. (Round your answer to four decimal places.)

(c)What is the probability that from 80 to 85 smoke? Use the normal approximation of the binomial distribution to answer this question. (Round your answer to four decimal places.)

(d) What is the probability that 100 or more smoke? Use the normal approximation of the binomial distribution to answer this question. (Round your answer to four decimal places.)

This question has been answered but the answers are incorrect

Solutions

Expert Solution

The probability that fewer than 65 smoke is

The probability that from 80 to 85 smoke is

The probability that 100 or more smoke is

orchestra answered 1 year ago
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