The average screen time for American children age 8 to 12 is 4.75 hours. A random sample of 20 children had a mean screen time of 5.5 hours with a standard deviation of 1.12 hours. At a = 0.05, can it be concluded that the average differs from the population average?
The average screen time for American children age 8 to 12 is 4.75 hours. A random sample of 20 children had a mean screen time of 5.5 hours with a standard deviation of 1.12 hours. At a = 0.05, can it be concluded that the average differs from the population average?
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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