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A local county has an unemployment rate of 6.9%. A random sample of 20 employable people are picked at random from the county and are asked if they are employed. Round answers to 4 decimal places. a) Find the probability that exactly 2 in the sample are unemployed. b) Find the probability that there are fewer than 4 in the sample are unemployed. c) Find the probability that there are more than 1 in the sample are unemployed. d) Find the probability that there are at most 4 in the sample are unemployed.

A local county has an unemployment rate of 6.9%. A random sample of 20 employable people are picked at random from the county and are asked if they are employed. Round answers to 4 decimal places. a) Find the probability that exactly 2 in the sample are unemployed. b) Find the probability that there are fewer than 4 in the sample are unemployed. c) Find the probability that there are more than 1 in the sample are unemployed. d) Find the probability that there are at most 4 in the sample are unemployed.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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A local county has an unemployment rate of 6.9%. A random sample of 20 employable people are picked at random from the county and are asked if they are employed. Round answers to 4 decimal places. a) Find the probability that exactly 2 in the sample are unemployed. b) Find the probability that there are fewer than 4 in the sample are unemployed. c) Find the probability that there are more than 1 in the sample are unemployed. d) Find the probability that there are at most 4 in the sample are unemployed.
Transcribed Image Text:A local county has an unemployment rate of 6.9%. A random sample of 20 employable people are picked at random from the county and are asked if they are employed. Round answers to 4 decimal places. a) Find the probability that exactly 2 in the sample are unemployed. b) Find the probability that there are fewer than 4 in the sample are unemployed. c) Find the probability that there are more than 1 in the sample are unemployed. d) Find the probability that there are at most 4 in the sample are unemployed.
Assume that a procedure yields a binomial distribution with n = 80 trials and the probability of success for one trial is p 0.59. || Find the mean for this binomial distribution. (Round answer to one decimal place.) 47.2 Find the standard deviation for this distribution. (Round answer to two decimal places.) O = 4.40 value μ-2σ ue μ+2σ. Use the range rule of thumb to find the minimum usu Enter answer as an interval using square-brackets only with whole numbers. th maximum usual usual values =
Transcribed Image Text:Assume that a procedure yields a binomial distribution with n = 80 trials and the probability of success for one trial is p 0.59. || Find the mean for this binomial distribution. (Round answer to one decimal place.) 47.2 Find the standard deviation for this distribution. (Round answer to two decimal places.) O = 4.40 value μ-2σ ue μ+2σ. Use the range rule of thumb to find the minimum usu Enter answer as an interval using square-brackets only with whole numbers. th maximum usual usual values =
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