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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) O (77.69, 78.31) O (77.70, 78.30) O (77.69, 78. 30) O (77.68, 78.31) 4 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) O (77.69, 78.31) O (77.70, 78.30) O (77.69, 78. 30) O (77.68, 78.31) 4 is not larger than 40 so we cannot compute a confidence interval.

College Algebra (MindTap Course List)
College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter8: Sequences, Series, And Probability
Section8.7: Probability
Problem 58E: What is meant by the sample space of an experiment?
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C Take Quiz Question 3 1 pts 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) O (77.69, 78.31) O (77.70, 78.30) (77.69, 78. 30) O (77.68, 78.31) O4 is not larger than 40 so we cannot compute a confidence interval. 1 pts Question 4
Transcribed Image Text:C Take Quiz Question 3 1 pts 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) O (77.69, 78.31) O (77.70, 78.30) (77.69, 78. 30) O (77.68, 78.31) O4 is not larger than 40 so we cannot compute a confidence interval. 1 pts Question 4
Question 4 1 pts 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) O (68.61, 71.39) O (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, pts
Transcribed Image Text:Question 4 1 pts 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) O (68.61, 71.39) O (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, pts
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