Question

Asked Nov 7, 2019

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Seventeen percent of U.S. residents are in their twenties. Consider a group of seven U.S. residents selected at random. Find the probability that at least four of the people in the group are in their twenties.

Step 1

Given information:

Population proportion (p) = 17%

p = 0.17

Sample size (n) =7

Step 2

Let *X* is random variable.

The formula of binomial distribution is,

Step 3

The probability that at least four of the people in the ...

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