Chapter 8, Problem 8.5P

$\boxed{SOC}$ Are middle-class families more likely than working-class families to maintain contact with kin? Write a paragraph summarizing the results of these tests.

a. A sample of middle-class families reported an average of 7.3 visits per year with close kin, while a sample of working-class families averaged 8.2 visits. Is the difference significant?

Sample 1 (Middle Class)	Sample 2 (Working Class)
${\bar{X}}_1=7.3$	${\bar{X}}_2=8.2$
$s_1=0.3$	$s_2=0.5$
$N_1=89$	$N_2=55$

b. The middle-class families averaged 2.3 phone calls and 8.7 e-mail messages per month with close kin. The working-class families averaged 2.7 calls and 5.7 e-mail messages per month. Are these differences significant?

Phone Calls per Month
Sample 1 (Middle Class)	Sample 2 (Working Class)
${\bar{X}}_1=2.3$	${\bar{X}}_2=2.7$
$s_1=0.5$	$s_2=0.8$
$N_1=89$	$N_2=55$

E-Mail Messages per Month
Sample 1 (Middle Class)	Sample 2 (Working Class)
${\bar{X}}_1=8.7$	${\bar{X}}_2=5.7$
$s_1=0.3$	$s_2=1.1$
$N_1=89$	$N_2=55$