5

The test statistic for a hypothesis test concerning the equality of two means when the population standard deviations are not known and the samples are matched (or paired) follows which distribution?

t

z

F

Chi square

1. You are going to test a hypothesis concerning two means where the null hypothesis involves a difference of 0. Suppose that your two sample means are 24.3 and 33.9 while the estimated standard error is 3.5. What is the test statistic? Answer to two decimal places.

QUESTION 8

1. Considerthepreviousproblemwheretheaveragewageforwomenwas$740andformenitwas$900andyoufoundateststatistic.Supposeyouconductyourhypothesistestwitha.05levelofsignificance.Trueorfalse:Yourejectthenullhypothesisofequality.

   True orFalse?