1) The following data pertains to the heights of fathers and their eldest sons in inches. If there is a significant relationship between the two variables, predict the height of the son if the height of his father is 78 inches. State the null and alternative hypothesis.
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Solution
The father
Mean =7 1 + 6 9 + 6 9 + 6 € + 6 6 + 6 3 + 68 +70+60 +58
=65.9
His son
Mean = 7 1 + 69 + 7 1 + 6 8 + 68 +66 + 70 +72 +65 +60
=68
when M₁ = 73
M₂ = ( 78-65₁9) + 68
= 80.1 in
The Answer is:
= 80.1 in