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Two-Sided Test: Difference Between 2 Sample Means.  Assume Pop Variances are Equal. What is the power (1b) to detect a difference in group means ()  0.75, using a  0.05, sample standard deviation for Group 1  1, sample standard deviation for Group 2  1.5 and sample sizes: 1 10  and  2 20.                                       Power   __________ What are the sample sizes needed for Part C to achieve a power (1b) equal to 80%? Keep the ratio of sample sizes about the same (twice as many for Group 2) slide the crosshairs in the plot to 80% power.           Sample Size for Group 1   __________    Sample Size for Group 2   __________

Two-Sided Test: Difference Between 2 Sample Means.  Assume Pop Variances are Equal. What is the power (1b) to detect a difference in group means ()  0.75, using a  0.05, sample standard deviation for Group 1  1, sample standard deviation for Group 2  1.5 and sample sizes: 1 10  and  2 20.                                       Power   __________ What are the sample sizes needed for Part C to achieve a power (1b) equal to 80%? Keep the ratio of sample sizes about the same (twice as many for Group 2) slide the crosshairs in the plot to 80% power.           Sample Size for Group 1   __________    Sample Size for Group 2   __________

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 26PFA
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  1. Two-Sided Test: Difference Between 2 Sample Means.  Assume Pop Variances are Equal.

What is the power (1b) to detect a difference in group means ()  0.75, using a  0.05, sample standard deviation for Group 1  1, sample standard deviation for Group 2  1.5 and sample sizes: 1 10  and  2 20.                                       Power   __________

  1. What are the sample sizes needed for Part C to achieve a power (1b) equal to 80%? Keep the ratio of sample sizes about the same (twice as many for Group 2) slide the crosshairs in the plot to 80% power.          

Sample Size for Group 1   __________    Sample Size for Group 2   __________

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