The hypothesis test result only tells us whether there is a significant difference between 2 populations or not. Calculate the exact standardized effect size using the provided information.
The hypothesis test result only tells us whether there is a significant difference between 2 populations or not. Calculate the exact standardized effect size using the provided information.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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The hypothesis test result only tells us whether there is a significant difference between 2 populations or not. Calculate the exact standardized effect size using the provided information.

Transcribed Image Text:According to the national statistics from 2009, the broadcast networks in American
averaged 13.50 minutes of commercials during a one-hour program. I was curious
whether the commercial time is significantly different now (2018) compared to 2009.
So I measured the commercial time during a one-hour period during prime time on 9
different networks and recorded the number of minutes. I assume that the
commercial time across all the broadcast networks in America is normally
distributed and I set the significance level at a = .05.

Transcribed Image Text:The comparison population is represented by the national statistics from 2009 with a population mean of 13.50
minutes of commercials during a one-hour program. The population standard deviation is not provided so it needs
to be estimated from the sample. The population mean is estimated with the sample mean. Use the sample data
below to calculate the sample mean (estimated population mean) and the estimated population standard deviation.
TV Network
1
2
3
4
5
6
7
8
9
Commercial
time per hour
13
13.5
15
14.25
14.5
14.25
13.25
16
16.75
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