To test the belief that sons are taller than their fathers, a student randomly selects 13 fathers
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To test the belief that sons are taller than their fathers, a student randomly selects 13 fathers who have adult male children. She records the height of both he father and son in inches and obtains the following data. Are sons taller than their fathers? Use the α = 0.1 level of signiï¬cance.
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2 3 4 Height of father, X 70.3 67.1 70.9 66.8 72.8 70.4 71.8 Height of son, Y 74.1 69.2 66.9 69.2 68.9 70.2 70.4 8 9 10 11 1213 Height of father, X 70.1 69.9 70.8 70.2 70.4 72.4 Height of son, Ii 69.3 75.8 72.3 69.2 68.6 73.9
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