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The National Emergency Number Association set a national standard for answering calls: 95% of 9111 calls should be answered within 20 seconds. In Portland, OR the reality is much different. Last month, just 45% of 911 callers got an answer within 20 seconds. A random sample of 27 911 calls in Portland was taken over a month. Let X be the number 911 calls answered in Portland within 20 seconds. Use a binomial distribution with n=27 calls, and p=0.45. Calculate the following a. μ.χ. b.ox: c. P(X= 11): d. P(X<16) e. P(X>9) f. P(X29): &P(11 ≤X≤13)

The National Emergency Number Association set a national standard for answering calls: 95% of 9111 calls should be answered within 20 seconds. In Portland, OR the reality is much different. Last month, just 45% of 911 callers got an answer within 20 seconds. A random sample of 27 911 calls in Portland was taken over a month. Let X be the number 911 calls answered in Portland within 20 seconds. Use a binomial distribution with n=27 calls, and p=0.45. Calculate the following a. μ.χ. b.ox: c. P(X= 11): d. P(X<16) e. P(X>9) f. P(X29): &P(11 ≤X≤13)

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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The National Emergency Number Association set a national standard for answering calls: 95% of 911 calls should be answered within 20 seconds. In Portland, OR the reality is much different. Last month, just 45% of 911 callers got an answer within 20 seconds. A random sample of 27 911 calls in Portland was taken over a month. Let X be the number 911 calls answered in Portland within 20 seconds. Use a binomial distribution with n=27 calls, and p=0.45. Calculate the following a. #X b.ox: c. P(X = 11): d. P(X<16): e. P(X> 9): 1. P(X29): 8. P(11 ≤X≤13) Qaris
Transcribed Image Text:The National Emergency Number Association set a national standard for answering calls: 95% of 911 calls should be answered within 20 seconds. In Portland, OR the reality is much different. Last month, just 45% of 911 callers got an answer within 20 seconds. A random sample of 27 911 calls in Portland was taken over a month. Let X be the number 911 calls answered in Portland within 20 seconds. Use a binomial distribution with n=27 calls, and p=0.45. Calculate the following a. #X b.ox: c. P(X = 11): d. P(X<16): e. P(X> 9): 1. P(X29): 8. P(11 ≤X≤13) Qaris
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