The owner of a small deli is trying to decide whether to discontinue selling mag

Question

The owner of a small deli is trying to decide whether to discontinue selling magazines. He suspects that only 10.9% of his customers buy a magazine and he thinks that he might be able to use the display space to sell something more profitable. Before making a final decision, he decides that for one day he will keep track of the number of customers that buy a magazine. Assuming his suspicion that 10.9% of his customers buy a magazine is correct, what is the probability that exactly 2 out of the first 14 customers buy a magazine? 0.186652 0.261954 0.221631 0.270662 0.269319 0.247897 Box 1: Select the best answer

Explanation / Answer

Here X follows the Binomial distribution.

p = 0.109

n = 14

We have to find P(X = 2)

P(X = 2) = 0.270662 ( Using excel =BINOM.DIST(2,14,0.109,0))

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