The time married men with children spend on child care averages 6.1 hours per week (Time, March 12, 2012). You belong to a professional group on family practices that would like to do its own study to determine if the time married men in your area spend on child care per week differs from the reported mean of 6.1 hours per week. A sample of 40 married couples will be used with the data collected showing the hours per week the husband spends on child care. Hours Spent in Child Care 10.3 Sample Size 40 10.9 7.8 Sample Mean (1 decimal) 3.1 1.0 Sample Standard Deviation (4 decimals) 9.9 2.8 Hypothesized Mean 6.1 9.2 4.5 Test Statistic (2 decimals) 3.9 4.9 Degrees of Freedom 10.0 2.9 p-value (4 decimals) 11.0 1.5 7.6 2.6 3.7 8.3 8.0 3.9 10.7 10.3 3.6 0.6 11.3 9.2 9.6 6.3 8.3 3.1 7.1 3.2 6.2 10.2 2.4 6.4 8.6 1.7 1.8 What is the sample mean (to 1 decimal)? ____________hours Calculate the value of the test statistic (to 2 decimals). What is the -value (to 4 decimals)? Do not round intermediate calculations.

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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The time married men with children spend on child care averages 6.1 hours per week (Time, March 12, 2012). You belong to a professional group on family practices that would like to do its own study to determine if the time married men in your area spend on child care per week differs from the reported mean of 6.1 hours per week. A sample of 40 married couples will be used with the data collected showing the hours per week the husband spends on child care.

Hours Spent in Child Care
10.3	Sample Size	40
10.9
7.8	Sample Mean (1 decimal)
3.1
1.0	Sample Standard Deviation (4 decimals)
9.9
2.8	Hypothesized Mean	6.1
9.2
4.5	Test Statistic (2 decimals)
3.9
4.9	Degrees of Freedom
10.0
2.9	p-value (4 decimals)
11.0
1.5
7.6
2.6
3.7
8.3
8.0
3.9
10.7
10.3
3.6
0.6
11.3
9.2
9.6
6.3
8.3
3.1
7.1
3.2
6.2
10.2
2.4
6.4
8.6
1.7
1.8

What is the sample mean (to 1 decimal)?

____________hours

Calculate the value of the test statistic (to 2 decimals).

What is the -value (to 4 decimals)? Do not round intermediate calculations.

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