Listed below are heights (in.) of fathers and their first sons. The data are from a journal kept by Francis Galton. (See Data Set 5 "Family Heights" in Appendix B.) Use a 0.05 significance level to test the claim that there is no difference in heights between fathers and their first sons.

Repeat Exercise 10 "Heights of Fathers and Sons" using all of the heights of fathers and sons listed in Data Set 5 "Family Heights" in Appendix B.

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Height of Father 72.0 66.0 69.0 70.0 70.0 70.0 70.0 75.0 68.265.0 Height of Son 73.0 68.0 68.0 71.0 70.0 70.071.0 71.0 70.0 63.0 FATHER 70.0 71.0 69.0 69.5 70.0 MOTHER FIRST SON 68.0 72.0 70.5 71.0 72.0 FIRST DAUGHTER 65.0 66.0 65.0 66.5 66.0 64.0 63.5 66.0 58.0