In a particular country on the African continent, 35% of the population is estimated to have at least one smart phone. If a small sample of 40 people is selected from the population for a statistical investigation, Use the Binomial distribution to estimate the probability of the number of people in the sample that have at least one smart phone is; a) at most 15; b) more than 12 but fewer than 18; c) exactly equal to the mean of the distribution

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
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Chapter1: Combinatorial Analysis
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In a particular country on the African continent, 35% of the
population is estimated to have at least one smart phone. If a small
sample of 40 people is selected from the population for a statistical
investigation, Use the Binomial distribution to estimate the
probability of the number of people in the sample that have at least
one smart phone is;
a) at most 15;
b) more than 12 but fewer than 18;
c) exactly equal to the mean of the distribution

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