Monica believes that the number of email accounts a person has depends on what area of the country they are from. They divide the country into 6 pieces. They then survey 45 people from Eastern, 43 people from Western US, 40 people from Central US, 35 people from Alaska, 39 people from Hawaii, and 47 people from the Territories. The value of the pooled standard deviation for each group is estimated as 2.7, and the overall average number of accounts is 14.21.
Monica believes that the number of email accounts a person has depends on what area of the country they are from. They divide the country into 6 pieces. They then survey 45 people from Eastern, 43 people from Western US, 40 people from Central US, 35 people from Alaska, 39 people from Hawaii, and 47 people from the Territories. The value of the pooled standard deviation for each group is estimated as 2.7, and the overall average number of accounts is 14.21.
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.4: Collecting Data
Problem 3E
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Monica believes that the number of email accounts a person has depends on what area of the country they are from. They divide the country into 6 pieces. They then survey 45 people from Eastern, 43 people from Western US, 40 people from Central US, 35 people from Alaska, 39 people from Hawaii, and 47 people from the Territories.
The value of the pooled standard deviation for each group is estimated as 2.7, and the overall average number of accounts is 14.21.
They calculated the following:
249 | (xi−14.21)2 |
i=1 |
Fill in the ANOVA table.
Use 3 decimal places
Degrees of Freedom |
Sums of Squares |
Mean Squares |
F | |
Model | ||||
Error | ||||
Total |
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