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You are doing a problem that requires you to use the Student's T-table. a.) If the number of observations in your sample is 18, what degrees of freedom do you use? b.) What T value has 5% of the area in the right-side tail?

You are doing a problem that requires you to use the Student's T-table. a.) If the number of observations in your sample is 18, what degrees of freedom do you use? b.) What T value has 5% of the area in the right-side tail?

A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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You are doing a problem that requires you to use the Student's T-table. a.) If the number of observations in your sample is 18, what degrees of freedom do you use? b.) What T value has 5% of the area in the right-side tail?
Transcribed Image Text:You are doing a problem that requires you to use the Student's T-table. a.) If the number of observations in your sample is 18, what degrees of freedom do you use? b.) What T value has 5% of the area in the right-side tail?
the 2. Nielsen Media Research conducted a study of household television viewing time during the 7PM to 10PM time period (This is known as Prime Time). The average weekly time spent watching was 785 minutes. This was based off 600 randomly selected households. Based upon past studies the population standard deviation is known to be 65 minutes. Develop an 80% confidence interval for the average time Americans watched prime-time TV this week.
Transcribed Image Text:the 2. Nielsen Media Research conducted a study of household television viewing time during the 7PM to 10PM time period (This is known as Prime Time). The average weekly time spent watching was 785 minutes. This was based off 600 randomly selected households. Based upon past studies the population standard deviation is known to be 65 minutes. Develop an 80% confidence interval for the average time Americans watched prime-time TV this week.
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