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In a sample of 5 courses with no support course the average final of 200 students was 70% with a standard deviation of 10%. Calculate a 95% confidence interval for the mean of students who did not take a support course. (Type numbers in Excel without percent sign) (68.61, 71.39) (68.61, 71.38) (68.60, 71.39) (69.96, 70.04) 5 is not larger than 40 so we cannot compute a confidence interval.

In a sample of 5 courses with no support course the average final of 200 students was 70% with a standard deviation of 10%. Calculate a 95% confidence interval for the mean of students who did not take a support course. (Type numbers in Excel without percent sign) (68.61, 71.39) (68.61, 71.38) (68.60, 71.39) (69.96, 70.04) 5 is not larger than 40 so we cannot compute a confidence interval.

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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In a sample of 5 courses with no support course the average final of 200 students was 70% with a standard deviation of 10%. Calculate a 95% confidence interval for the mean of students who did not take a support course. (Type numbers in Excel without percent sign) (68.61, 71.39) (68.61, 71.38) (68.60, 71.39) (69.96,70.04) O 5 is not larger than 40 so we cannot compute a confidence interval.
Transcribed Image Text:In a sample of 5 courses with no support course the average final of 200 students was 70% with a standard deviation of 10%. Calculate a 95% confidence interval for the mean of students who did not take a support course. (Type numbers in Excel without percent sign) (68.61, 71.39) (68.61, 71.38) (68.60, 71.39) (69.96,70.04) O 5 is not larger than 40 so we cannot compute a confidence interval.
A college has decided to add support courses to its statistics classes to assist students. We look at the next semester to determine if the addition of the support courses assisted students. In a sample of 4 courses with support courses the average final grade of 160 students was 78% with a standard deviation of 2%. Calculate a 95% confidence interval for the population mean of students who took a support course. (Type numbers in Excel calculator without percent sign) (77.69, 78.31) O (77.70, 78.30) (77.69,78.30) (77.68,78.31) 4 is not larger than 40 so we cannot compute a confidence interval.
Transcribed Image Text:A college has decided to add support courses to its statistics classes to assist students. We look at the next semester to determine if the addition of the support courses assisted students. In a sample of 4 courses with support courses the average final grade of 160 students was 78% with a standard deviation of 2%. Calculate a 95% confidence interval for the population mean of students who took a support course. (Type numbers in Excel calculator without percent sign) (77.69, 78.31) O (77.70, 78.30) (77.69,78.30) (77.68,78.31) 4 is not larger than 40 so we cannot compute a confidence interval.
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