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Instruction: Answer the following question, show your solution and once you get the final answer, interpret it. 1. A random sample of 12 female students in a certain dormitory showed an average weekly expenditure of $8.00 for snack foods, with a standard deviation of $1.75. Construct a 90% confidence interval for the average amount spent each week on snack foods by female students living in this dormitory, assuming the expenditures to be approximately normally distributed.

Instruction: Answer the following question, show your solution and once you get the final answer, interpret it. 1. A random sample of 12 female students in a certain dormitory showed an average weekly expenditure of $8.00 for snack foods, with a standard deviation of $1.75. Construct a 90% confidence interval for the average amount spent each week on snack foods by female students living in this dormitory, assuming the expenditures to be approximately normally distributed.

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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Instruction: Answer the following question, show your solution and once you get the final answer, interpret it. 1. A random sample of 12 female students in a certain dormitory showed an average weekly expenditure of $8.00 for snack foods, with a standard deviation of $1.75. Construct a 90% confidence interval for the average amount spent each week on snack foods by female students living in this dormitory, assuming the expenditures to be approximately normally distributed. 2. The heights of a random sample of 50 college students showed a mean of 174.5 centimeters and a standard deviation of 6.9 centimeters. Construct a 98% confidence interval for the mean height of all college students.
Transcribed Image Text:Instruction: Answer the following question, show your solution and once you get the final answer, interpret it. 1. A random sample of 12 female students in a certain dormitory showed an average weekly expenditure of $8.00 for snack foods, with a standard deviation of $1.75. Construct a 90% confidence interval for the average amount spent each week on snack foods by female students living in this dormitory, assuming the expenditures to be approximately normally distributed. 2. The heights of a random sample of 50 college students showed a mean of 174.5 centimeters and a standard deviation of 6.9 centimeters. Construct a 98% confidence interval for the mean height of all college students.
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