Question

For the following scenarios write an appropriate null and alternative hypothesis and identify what type of test statistic will be used. (Steps 1 & 3 of the six step hypothesis test.)

a. A nationwide sample of influential Republicans and Democrats was asked as part of a comprehensive survey whether they favored lowering environmental standards so that high-sulfur coal could be burned in coal-fired plants. The results were:

	Republicans	Democrats
No. Sampled	1100	1400
No. in Favor	115	158

At the .01 level of significance, can we conclude that there is a larger proportion of Democrats in favor of lowering the standards?

i. Hypotheses:

ii. Type of Test Statistic:

b. A survey investigated the public’s attitude toward the federal deficit. Each sample citizen was classified as to whether he or she felt the government should reduce the deficit or increase the deficit, or if the individual had no opinion. The sample results of the study by gender are reported below. At the .05 significance level, is it reasonable to conclude that gender is independent of a person’s position on the deficit?

Gender	Reduce the Deficit	Increase the Deficit	No Opinion
Female	621	144	48
Male	598	121	53

iii. Hypotheses:

iv. Type of Test Statistic:

Answer 1