1) Aphysiologistbelieveshehasdiscoveredanewsteroidhormonethatcancontrolthebloodglucoseinmammals.Inanexperimentheinjectslaboratoryratswithasmallamountofthissteroidhormoneand,afterasuitablewaitingperiodmeasuresthebloodglucoseleveloftherats.Inhistwelveexperimentalratsheobtainsthefollowinglevelsofbloodglucose{35,36,21,33,34,35,33,35,37,36,38,35}.Frompreviousstudiesofthousandsofnormal,unmanipulatedratsheknowsthatthemean(mu)bloodglucoselevelinthisspeciesofrat(hislaboratorypopulation)is32andthatthestandarddeviationis1.15.Evaluatethehypothesisthatthisnewsteroidhormonedecreasesbloodglucoselevels.Useanalpha-levelof0.01forthisanalysis.

a) What is the appropriate test?

b) What is the null hypothesis?

e) What is the alternative hypothesis?

d) Find the critical value:

e) Calculate the obtained statistic:

2 ) Power is an esoteric topic that has very little practical utility.

True

False

3) The binomial distribution is an example of a sampling distribution.

True

False

4) IfH0is false, a high level of power increases the probability we will reject it.

True

False

5) In general, Alpha + Beta = 1.

True

False

6) The area under the critical region for rejection must _________.

a- equal alphabe

b- less than alphabe

c- greater than alpha

d- equal one-half of alpha