Match problems to procedures.

Answer

1. 1-tailed test of proportion with negative critical value

2. 2-tailed test of mean with both negative and positive critical

3. 1-tailed test of mean with negative critical values

4. 1-tailed test of paired-data with positive critical value

5. 2-tailed test of means of 2 independent populations

Questions

1)Rin times (msec)of a new phone app developed by GotYourGP and

competitor

weTrackyou.inc. are logged in a data file. At = 0.05, are the run times of

GotYourGP and WeTrackYou.inc Comparable?

2)Testing that a gasoline additive increases mileage, we compute mpg with

Additive minus mpg without additive for each car. If the mean of the differences is

positive enough, action will be required to implement the additive

3) An effective vaccine would reduce the proportion of exposed persons

Contacting a disease. A pharmaceutical company wants to test the

Effectiveness of the new vaccine in preventing a certain disease. It is expected that 40% unvaccinated exposed people will contract the disease. A group of 48 exposed

persons volunteered to be vaccinated. Later, two of the volunteers contracted the

disease. Test H0: 0.40 (vaccine ineffective) at = 0.01.

4)Test size C battery mean life is at least 25 hours.

5) Given weights of 31, 29, 26, 33, 40, 28, 30, and 25, at = 0.05 test that the population mean is 35.