You have been assigned to test the hypothesis that the average number of hours per week that an American works is higher than the average number of hours per week that a Swede works. The following data summarizes the sample statistics for the number of hours worked per week for workers in each country. Assume that the population variances are unequal. American Swede Sample mean 32.7 hours 28.2 hours Sample size 15 12 Sample standard deviation 5.1 hours 6.0 hours If population 1 is defined as American workers and population 2 is defined as Swedish workers, the degrees of freedom for this hypothesis are?
You have been assigned to test the hypothesis that the average number of hours per week that an American works is higher than the average number of hours per week that a Swede works. The following data summarizes the sample statistics for the number of hours worked per week for workers in each country. Assume that the population variances are unequal. American Swede Sample mean 32.7 hours 28.2 hours Sample size 15 12 Sample standard deviation 5.1 hours 6.0 hours If population 1 is defined as American workers and population 2 is defined as Swedish workers, the degrees of freedom for this hypothesis are?
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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You have been assigned to test the hypothesis that the average number of hours per week that an American works is higher than the average number of hours per week that a Swede works. The following data summarizes the sample statistics for the number of hours worked per week for workers in each country. Assume that the population variances are unequal.
| American | Swede | |
| Sample mean | 32.7 hours | 28.2 hours |
| 15 | 12 | |
| Sample standard deviation | 5.1 hours | 6.0 hours |
If population 1 is defined as American workers and population 2 is defined as Swedish workers, the degrees of freedom for this hypothesis are?
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