1. Each person has a 75% probability of going to the Chess Tahoe restaurant. a. You randomly select 8 people. What is the probability that 5 people will not go to the restaurant? (Calculation is necessary to get FULL credits) (5 points)​

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Step-by-step explanation:

75%

selected=8

=8-5=3

=75/100×3

=3/4×3

=9/4

=2 1/4

The probability that 5 people will not go to the restaurant is; 2.31%

This is a binomial probability distribution question which follows the formula;

P(X = x) = ⁿCx • p^(x) • (1 - p)^(n - x)

We are given;

Probability of each person going to the chess Tahoe restaurant; 75% = 0.75

But in this case, we want probability of not going to the restaurant.

Thus;

p = 1 - 0.75

p = 0.25

Sample size; n = 7

Selection; x = 5

Thus,probability that 5 people will not go to the restaurant is;

P(X = 5) = 8C5 × 0.25^(5) × (1 - 0.25)^(8 - 5)

P(X = 5) = 56 × 0.0009765625 × 0.421875

P(X = 5) = 0.0231

P(X = 5) = 2.31%

Read more about binomial probability distribution at; https://brainly.com/question/15246027

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