A survey indicates that 20% of the people who earn less than $42000 per year are homeowners. If a sample of 15 people who earn less than $42000 per year is randomly selected, what is the probability that at least 2 from 15 people are homeowners. Find the mean and standard deviation of random variable X, where X is the number of people who earn less than $42000 out of 15 selected
A survey indicates that 20% of the people who earn less than $42000 per year are homeowners. If a sample of 15 people who earn less than $42000 per year is randomly selected, what is the probability that at least 2 from 15 people are homeowners. Find the mean and standard deviation of random variable X, where X is the number of people who earn less than $42000 out of 15 selected
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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Question
A survey indicates that 20% of the people who earn less than $42000 per year are
homeowners. If a sample of 15 people who earn less than $42000 per year is randomly
selected, what is the probability that at least 2 from 15 people are homeowners. Find the
mean and standard deviation of random variable X, where X is the number of people who
earn less than $42000 out of 15 selected
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