8.9 SOC A survey has been administered to random samples of respondents in each of five nations.

For each nation, are men and women significantly different in terms of their reported levels of satisfaction?

Respondents were asked: “How satisfied are you with your life as a whole?” Responses varied from 1 (very dissatisfied) to 10 (very satisfied).

Conduct a test for the significance of the difference in mean scores for each nation.

Canada Males Females X157.4 X257.7 s1 5 0.20 s2 5 0.25 n1 5 1,005 n2 5 1,234 Nigeria Males Females X156.7 X257.8 s1 5 0.16 s2 5 0.23 n1 5 1,825 n2 5 1,256 China Males Females X157.6 X257.1 s1 5 0.21 s2 5 0.11 n1 5 1,400 n2 5 1,200 Mexico Males Females X158.3 X259.1 s1 5 0.29 s2 5 0.30 n1 5 1,645 n2 5 1,432 Japan Males Females X158.8 X259.3 s1 5 0.34 s2 5 0.32 n1 5 1,621 n2 5 1,683