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18. On the other hand, the researcher claims that the average length (i days) of a human pregnancy is less than 266. To test his claim, which o the following sets of hypotheses should be used? A. Ho: p= 252 vs. Ha: μ> 252 B. Ho: u = 252 vs. Ha: μ< 252

18. On the other hand, the researcher claims that the average length (i days) of a human pregnancy is less than 266. To test his claim, which o the following sets of hypotheses should be used? A. Ho: p= 252 vs. Ha: μ> 252 B. Ho: u = 252 vs. Ha: μ< 252

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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For numbers 16-19: Studies show that length (in days) of a human pregnancy, X is normally distributed with mean 266 and a standard deviation of 16. To verify if X indeed follows a normal distribution, a researcher randomly selected 10 females who just gave birth and recorded the length (in days) of their pregnancy. Based on the samples, the average length (in days) of their pregnancy is 252 with a standard deviation of 20.
Transcribed Image Text:For numbers 16-19: Studies show that length (in days) of a human pregnancy, X is normally distributed with mean 266 and a standard deviation of 16. To verify if X indeed follows a normal distribution, a researcher randomly selected 10 females who just gave birth and recorded the length (in days) of their pregnancy. Based on the samples, the average length (in days) of their pregnancy is 252 with a standard deviation of 20.
18. On the other hand, the researcher claims that the average length (in days) of a human pregnancy is less than 266. To test his claim, which of the following sets of hypotheses should be used? A. Ho: p= 252 vs. Ha: µ > 252 B. Ho: u = 252 vs. Ha: μ< 252 OC. Ho: μ = 266 vs. Ha: µ > 266 D. Ho: µ = 266 vs. Ha: p < 266
Transcribed Image Text:18. On the other hand, the researcher claims that the average length (in days) of a human pregnancy is less than 266. To test his claim, which of the following sets of hypotheses should be used? A. Ho: p= 252 vs. Ha: µ > 252 B. Ho: u = 252 vs. Ha: μ< 252 OC. Ho: μ = 266 vs. Ha: µ > 266 D. Ho: µ = 266 vs. Ha: p < 266
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