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Example C) The lengths of pregnancies have a mean of 268 days and a standard deviation of 15 days. A researcher is concerned that people who have taken a particular drug in the past might have shorter lengths of pregnancies. The researcher sampled n = 25 people who had taken the drug and recently given birth, and found they had an average length of pregnancy of 262.9 days. Do these data support the researcher's claim? (Use a = 0.01, one-tail test) %3D 9. Determine the zcrit value. 10. Calculate the standard error (OM) of length of pregnancy. 11. Calculate the observed z score for the sample mean.

Example C) The lengths of pregnancies have a mean of 268 days and a standard deviation of 15 days. A researcher is concerned that people who have taken a particular drug in the past might have shorter lengths of pregnancies. The researcher sampled n = 25 people who had taken the drug and recently given birth, and found they had an average length of pregnancy of 262.9 days. Do these data support the researcher's claim? (Use a = 0.01, one-tail test) %3D 9. Determine the zcrit value. 10. Calculate the standard error (OM) of length of pregnancy. 11. Calculate the observed z score for the sample mean.

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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Example C) The lengths of pregnancies have a mean of 268 days and a standard deviation of 15 days. A researcher is concerned that people who have taken a particular drug in the past might have shorter lengths of pregnancies. The researcher sampled n 25 people who had taken the drug and recently given birth, and found they had an average length of pregnancy of 262.9 days. Do these data support the researcher's claim? (Use a = 0.01, one-tail test) %3D 9. Determine the zcrit value. 10. Calculate the standard error (ơm) of length of pregnancy. 11. Calculate the observed z score for the sample mean.
Transcribed Image Text:Example C) The lengths of pregnancies have a mean of 268 days and a standard deviation of 15 days. A researcher is concerned that people who have taken a particular drug in the past might have shorter lengths of pregnancies. The researcher sampled n 25 people who had taken the drug and recently given birth, and found they had an average length of pregnancy of 262.9 days. Do these data support the researcher's claim? (Use a = 0.01, one-tail test) %3D 9. Determine the zcrit value. 10. Calculate the standard error (ơm) of length of pregnancy. 11. Calculate the observed z score for the sample mean.
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