Math Problem Statement

Question content area top Part 1 Thirty​-nine percent of U.S. adults have very little confidence in newspapers. You randomly select nine U.S. adults. Find the probability that the number who have very little confidence in newspapers is​ (a) exactly four and​ (b) exactly one.

Solution

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Math Problem Analysis

Mathematical Concepts

Probability
Binomial Distribution

Formulas

P(X = k) = (n choose k) * p^k * (1-p)^(n-k)
Binomial Coefficient: (n choose k) = n! / [k! * (n-k)!]

Theorems

Binomial Theorem

Suitable Grade Level

Grades 9-12