Match problems to procedures.

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

-Run times (msec) of a new phone app developed by GotYourGP and established competitor WeTrackYou.lnc. are logged in a data file. At ex = 0.05, are the run times of GotYourGP and WeTrackYou.lnc comparable?

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

additive minus mpg without additive for each car. If the negative critical valuemean of the differences is positive enough, action willbe required to implement

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

-An effective vaccine would reduce the proportion of exposed persons contracting a disease. A pharmaceutical company wants to test the effectiveness of a new vaccine in preventing a certain disease. It is expected that 40% of 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 HO: n 0.40 (vaccine ineffective) at cx+0.01.

Match with

1. 1-tailed test of proportion with

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

3. 1-tailed test of mean with negative

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

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