8 IntheSpapcelabLifeSciencePayload14maleratsweresenttospaceU

8) IntheSpapcelabLifeSciencePayload,14maleratsweresenttospace.Upontheirrerurn,thered bloodcellmass(inmilliliters)oftheratswasdetermined.controlgroupof14maleratswasheld underthesameconditionsasthespacerats,andtheirredbloodcellmasswasalsodetermined whenthespaceratswasreturned.Theproject,ledbyDr.PaulX.Callahan,resultedinthedatalisted inthetablebelow.Doestheevidencesupporttheclaimthattheflightanimalshavedifferentredblood cellmassfromofthecontrolanimal?

Flight:

Control:

9.79 7.54

8.55 9.14

8.59

8.64

7.43

7.21

6.87

7.89

6.85

7.00

8.80

9.30

8.03

6.39

8.65

6.99

8.40

9.66

7.62

7.44

8.70

7.33

8.58

9.88

9.94

7.14

b)Use95%confidenceintervaltoconstructconfidenceintrevaltoestimatethedifferencebetween thetwopopulationmeans.doestheconfidenceintervalsupporttheclaim?Explain.

Solution