The average local cell phone call length was reported to be 2.27 minutes. A random sample of 10 phone calls showed an average of 2.98 minutes in length with a standard deviation of 0.98 minute. At alfa=0.01 can it be concluded that the average differs from the population average?

The average local cell phone call length was reported to be 2.27 minutes. A random sample of 10 phone calls showed an average of 2.98 minutes in length with a standard deviation of 0.98 minute. At alfa=0.01 can it be concluded that the average differs from the population average?

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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