Heights (cm) and weights (kg) are measured for 100 randomly selected adult males

Question

Heights (cm) and weights (kg) are measured for 100 randomly selected adult males, and range from heights of 132 to 191 cm and weights of 41 to 150 kg. Let the predictor variable x be the first variable given. The 100 paired measurements yield x hat= 167.82 cm, y hat= 81.39 kg,

r = 0.101, P-value = 0.317, and y = - 106 + 1.01x.

Find the best predicted value of y (weight) given an adult male who is 189 cm tall. Use a 0.05 significance level.

Find the best predicted value of y hat for an adult male who is 189 tall in ____kg.

Please provide a picture of written work, thanks!

Explanation / Answer

y = - 106 + 1.01x.

thus for 189 cm tall we get y = - 106 + 1.01*189=84.89 thus the predicted value is 84.89 kg

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