Hi all!

I have a homework assignment due this Monday, and then an exam basically on this HW on Tues, which you can use notes on. So I need to get notes from here so I can use them on the tests (which, again, is allowed). Therefore, please set-up the answers for me, and work it out, providing the answer as well.

Thanks for all and ANY help!

1. A study in the journal of the American Medical Association examined people to see if they showed any signs of IRS (insulin resistance syndrome) involving major risk factors for Type 2 diabetes and heart disease. Among 102 subjects with high weekly dairy consumption, 24 were identified with IRS. In comparison, IRS was identified in 85 of 190 individuals with low dairy consumption. Is there strong evidence that IRS risk is different in people with high dairy consumption than those with low dairy consumption?

2. A jury list contains the names of all individuals who may be called for jury duty. The proportion of the available jurors on the list who are woman is .54. If 40 people are selected to serve as candidates for being picked on the jury, show all steps of significance test of the hypothesis that the selections are random with respect to gender. 8 of the 40 selected were woman. Use a significance level of 0.02.

3. The Lakeside Sand Co. has a contract with the San Diego River authority. The sand co. pays the river authority $25 per truck load for sand. The contract states, "the truckloads may average no more than 25,000 lbs". To determine whether the sand co. is in compliance w/ the contract the river authority weighs 37 loads of sand. The ave. is 25,175 lbs with a standard deviation of 860 lbs. test if the co. is in compliance at the .05 level.

4. Last month a random sample of 1,000 subjects was interviewed and asked whether they think the president is doing a good job. This month the same subjects were asked this again. The results are: 450 said yes each time, 450 said no each time, 60 said yes on the first survey and yes on the second survey.

Find the test statistic and P-value for applying McNemar's test that the population proportion was the same each month, and interpret.

Those are very nice problems. What have you done to solve them? Surely you have some plan of attack.