1. Suppose you are interested in testing whether the mean earning of men in the General Social Survey is representative of the earning of the entire U.S. male population. The average male in the General Social Survey earned $31,607 in 2005 and the average male in the population earned $33,405 in 2005. State the null and research hypotheses. (1-point)

Your Answer: ____________________________

1. We drew a sample of white males (N=401) from GSS 2010. The mean earnings is $43,000 with a standard deviation 18,500. In 2010, the national average earnings for all men is $37,500. Is there a statistically significant difference between the mean earnings of white males and the national average earnings for all men? (Hint: use t-test two tail test). (2-points)

Assumptions: __________________

State your Research and Null Hypothesis: _________________

Selecting the Sampling distribution and Specify the Test Statistic: __________________

Compute the Test Statistic: ___________________________

Show your work:

Make a Decision and Interpret the Results: _______________________

1. Based on the information provided in table 1,
2. Conduct a hypothesis testing using all the appropriate steps to test whether there is a statistically significant relationship (dependence) between Occupation and Nationality. (1-point)
3. The appropriate measure of association (-lambda) and explain how the relationship between income and fundraising participation is strong, moderate, or weak. Please make sure to show your work. (1-point)

Table 1. Raw Frequencies of Occupational categories by Nationality

Occupation Nationality Row Marginals

Russian Ukrainian Latvian

Professional 20 10 20 50

Blue-collar 15 30 10 55

Farmer 5 10 30 45

Column Marginals 40 50 60 150

Assumptions: __________________

State your Research and Null Hypothesis: _________________

Selecting the Sampling distribution and Specify the Test Statistic: __________________

Compute the Test Statistic: ___________________________

Show your work:

Make a Decision and Interpret the Results: _______________________

b)

(lambda)= ____________.

Show your work: