In a survey, twelve students have been selected from a certain university. They wrote an average of 79.3 sentences per 30 minutes with a standard deviation of 7.8 sentences per 30 minutes. Assume that the number of sentences written per 30 minutes are following a normal distribution, compute a 95% confidence interval for the average number of sentences written by all the students of that university.
In a survey, twelve students have been selected from a certain university. They wrote an average of 79.3 sentences per 30 minutes with a standard deviation of 7.8 sentences per 30 minutes. Assume that the number of sentences written per 30 minutes are following a normal distribution, compute a 95% confidence interval for the average number of sentences written by all the students of that university.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
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