MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Please answer A and B. 

A random sample of 35 Hollywood movies made in the last 10 years had a mean length of 125.2 minutes, with a standard deviation of 20.4 minutes. a. Calculate the degrees of freedom. b. Construct a 90% confidence interval for the true mean length of all Hollywood movies made in the last 10 years. (Provide the answer with 2 decimal places).
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Transcribed Image Text:A random sample of 35 Hollywood movies made in the last 10 years had a mean length of 125.2 minutes, with a standard deviation of 20.4 minutes. a. Calculate the degrees of freedom. b. Construct a 90% confidence interval for the true mean length of all Hollywood movies made in the last 10 years. (Provide the answer with 2 decimal places).
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