2. In a random sample of 91 college students, the average number of Discord messages handled in one day is 216. The 90% confidence interval for the mean number of messages handled by students daily is given as 210 to 222. a. What is the population standard deviation? b. If the number of samples were doubled, what would be the new confidence interval (keeping the same confidence level?)
2. In a random sample of 91 college students, the average number of Discord messages handled in one day is 216. The 90% confidence interval for the mean number of messages handled by students daily is given as 210 to 222. a. What is the population standard deviation? b. If the number of samples were doubled, what would be the new confidence interval (keeping the same confidence level?)
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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