The necessary sample size is n = 1068 (Round up to the nearest whole number.)
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter13: Probability And Calculus
Section13.2: Expected Value And Variance Of Continuous Random Variables
Problem 10E
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Given a normal random variable X with mean 74 and variance 25, and a random sample of size n taken from
the distribution, what sample size n is necessary in order that P(73.7 ≤X ≤74.3) = 0.95?
Click here to view page 1 of the standard normal distribution table.
Click here to view page 2 of the standard normal distribution table
The necessary sample size is n = 1068
(Round up to the nearest whole number.)
KITE
27](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F3de35205-26d6-4454-aaa2-6bc3d012af0c%2F53e0bf28-fa43-4550-a8ae-cba29cd03874%2Fhhzj7hj_processed.jpeg&w=3840&q=75)
Transcribed Image Text:←
Given a normal random variable X with mean 74 and variance 25, and a random sample of size n taken from
the distribution, what sample size n is necessary in order that P(73.7 ≤X ≤74.3) = 0.95?
Click here to view page 1 of the standard normal distribution table.
Click here to view page 2 of the standard normal distribution table
The necessary sample size is n = 1068
(Round up to the nearest whole number.)
KITE
27
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