SOLUTION: Suppose that 10% of Americans are afraid of being alone in a house at night. If a random sample of 13 Americans is selected, find the following probability by using a binomial tabl

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 Click here to see ALL problems on Probability-and-statistics Question 560130: Suppose that 10% of Americans are afraid of being alone in a house at night. If a random sample of 13 Americans is selected, find the following probability by using a binomial table. Give your final answer to to three decimal places. There are exactly 4 people in the sample who are afraid of being alone at night. Answer by stanbon(57967)   (Show Source): You can put this solution on YOUR website!Suppose that 10% of Americans are afraid of being alone in a house at night. If a random sample of 13 Americans is selected, find the following probability by using a binomial table. Give your final answer to to three decimal places. There are exactly 4 people in the sample who are afraid of being alone at night. --------- Binomial Problem with n = 13 and p(afraid) = 0.10 --- P(x = 4) = 13C4*(0.1)^4*(0.9)^9 = binompdf(13.0.1,4) = 0.0277 =============================== Cheers, Stan H. ================