Many people believe that the average number of Facebook friends is 135. The population standard deviation is 38.9. A random sample of 35 high school students in a particular county revealed that the average number of Facebook friends was 145. At a = 0.01, is there sufficient evidence to conclude that the mean number of friends is greater than 135?

Many people believe that the average number of Facebook friends is 135. The population standard deviation is 38.9. A random sample of 35 high school students in a particular county revealed that the average number of Facebook friends was 145. At a = 0.01, is there sufficient evidence to conclude that the mean number of friends is greater than 135?

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Description: need help on these, everything you need is in the screenshot Many people believe that the average number of Facebook friends is 135. The population standard deviation is 38.9. A randomolosample of 35 high school students in a particular county reveal

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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