In Minitab, open the data set PULSE.mtw. You may assume that these 92 students are a random sample of all undergraduates.

(a) Obtain a 95% confidence interval for _F - _M, the extent to which average pulse rates of female undergraduates exceeds that of male undergraduates. Provide a "sloppy" interpretation of your interval.

(b) What is a 95% confidence interval for _M - _F?

(c) Obtain boxplots of the two sets of pulse rates. Do they look as though they come from normal populations?

Pulse1Pulse2RanSmokesSexHeightWeightActivity

6488RanNonSmokerMale66.00140Moderate

5870RanNonSmokerMale72.00145Moderate

6276RanSmokeMale73.50160ALot

6678RanSmokeMale73.00190Slight

6480RanNonSmokerMale69.00155Moderate

7484RanNonSmokerMale73.00165Slight

8484RanNonSmokerMale72.00150ALot

6872RanNonSmokerMale74.00190Moderate

6275RanNonSmokerMale72.00195Moderate

76118RanNonSmokerMale71.00138Moderate

9094RanSmokeMale74.00160Slight

8096RanNonSmokerMale72.00155Moderate

9284RanSmokeMale70.00153ALot

6876RanNonSmokerMale67.00145Moderate

6076RanNonSmokerMale71.00170ALot

6258RanNonSmokerMale72.00175ALot

6682RanSmokeMale69.00175Moderate

7072RanSmokeMale73.00170ALot

6876RanSmokeMale74.00180Moderate

7280RanNonSmokerMale66.00135ALot

70106RanNonSmokerMale71.00170Moderate

7476RanNonSmokerMale70.00157Moderate

66102RanNonSmokerMale70.00130Moderate

7094RanSmokeMale75.00185Moderate

96140RanNonSmokerFemale61.00140Moderate

62100RanNonSmokerFemale66.00120Moderate

78104RanSmokeFemale68.00130Moderate

82100RanNonSmokerFemale68.00138Moderate

100115RanSmokeFemale63.00121Moderate

68112RanNonSmokerFemale70.00125Moderate

96116RanNonSmokerFemale68.00116Moderate

78118RanNonSmokerFemale69.00145Moderate

88110RanSmokeFemale69.00150Moderate

6298RanSmokeFemale62.75112Moderate

80128RanNonSmokerFemale68.00125Moderate

6262StillNonSmokerMale74.00190Slight

6062StillNonSmokerMale71.00155Moderate

7274StillSmokeMale69.00170Moderate

6266StillNonSmokerMale70.00155Moderate

7676StillNonSmokerMale72.00215Moderate

6866StillSmokeMale67.00150Moderate

5456StillSmokeMale69.00145Moderate

7470StillNonSmokerMale73.00155ALot

7474StillNonSmokerMale73.00155Moderate

6868StillNonSmokerMale71.00150ALot

7274StillSmokeMale68.00155ALot

6864StillNonSmokerMale69.50150ALot

8284StillSmokeMale73.00180Moderate

6462StillNonSmokerMale75.00160ALot

5858StillNonSmokerMale66.00135ALot

5450StillNonSmokerMale69.00160Moderate

7062StillSmokeMale66.00130Moderate

6268StillSmokeMale73.00155Moderate

4854StillSmokeMale68.00150

7676StillNonSmokerMale74.00148ALot

8884StillNonSmokerMale73.50155Moderate

7070StillNonSmokerMale70.00150Moderate

9088StillSmokeMale67.00140Moderate

7876StillNonSmokerMale72.00180ALot

7066StillSmokeMale75.00190Moderate

9090StillNonSmokerMale68.00145Slight

9294StillSmokeMale69.00150Moderate

6070StillSmokeMale71.50164Moderate

7270StillNonSmokerMale71.00140Moderate

6868StillNonSmokerMale72.00142ALot

8484StillNonSmokerMale69.00136Moderate

7476StillNonSmokerMale67.00123Moderate

6866StillNonSmokerMale68.00155Moderate

8484StillNonSmokerFemale66.00130Moderate

6170StillNonSmokerFemale65.50120Moderate

6460StillNonSmokerFemale66.00130ALot

9492StillSmokeFemale62.00131Moderate

6066StillNonSmokerFemale62.00120Moderate

7270StillNonSmokerFemale63.00118Moderate

5856StillNonSmokerFemale67.00125Moderate

8874StillSmokeFemale65.00135Moderate

6672StillNonSmokerFemale66.00125Moderate

8480StillNonSmokerFemale65.00118Slight

6266StillNonSmokerFemale65.00122ALot

6676StillNonSmokerFemale65.00115Moderate

8074StillNonSmokerFemale64.00102Moderate

7878StillNonSmokerFemale67.00115Moderate

6868StillNonSmokerFemale69.00150Moderate

7268StillNonSmokerFemale68.00110Moderate

8280StillNonSmokerFemale63.00116Slight

7676StillSmokeFemale62.00108ALot

8784StillNonSmokerFemale63.0095ALot

9092StillSmokeFemale64.00125Slight

7880StillNonSmokerFemale68.00133Slight

6868StillNonSmokerFemale62.00110Moderate

8684StillNonSmokerFemale67.00150ALot

7676StillNonSmokerFemale61.75108Moderate