Author: Anonymous

Dee’s Burgers claims its mean burger meat weight is greater than Tom’s. A random sample of 35 Dee’s burgers has x̄1 = 8.1 and s1 = 0.15. A random sample of 40 Tom’s burgers has x̄2 = 8.0 and s2 = 0.20. Use α = 0.05. The right-tail critical value is 1.645. Is the claim supported? Answer “supported” or “not supported”.

If H1: μ1 < μ2, what type of hypothesis test is required?

What days of the week are assignments due in our course from Week 1 – Week 3? (Select all that apply). 

A researcher compares the mean ratings from 35 Dee’s customers and 40 Tom’s customers. Which test type is appropriate?

H1: μ1 < μ2. What type of test is implied? Answer with left-tail, right-tail, or two-tail.

Which function is used for a two-sample variance test?

Why are there no small-sample proportion tests in Module 7?

A matched-pairs test has n = 14 pairs. What df is used?

A researcher claims that the proportion of female students with summer jobs is less than the proportion of male students with summer jobs. If females are Sample 1, which pair is correct?

In the summer-job study, the claim is that the proportion of male students with summer jobs is greater than the proportion of female students with summer jobs. The test statistic is TS = 5.611, and the right-tail critical value is 1.645. Is the claim supported? Answer “supported” or “not supported”.