A sample of 40 women is obtained, and their heights (in inches) and pulse rates

Question

A sample of 40 women is obtained, and their heights (in inches) and pulse rates (in beats per minute) are measured. The linear correlation coefficient is 0.217 and the equation of the regression line is y with caret=18.1+0.890x, where x represents height. The mean of the 40 heights is 62.9 in and the mean of the 40 pulse rates is 77.6 beats per minute. Find the best predicted pulse rate of a woman who is 75 in tall. Use a significance level of =0.01.

The best predicted pulse rate of a woman who is 75 in tall is ___ beats per minute.

Explanation / Answer

from above regression line

The best predicted pulse rate of a woman who is 75 in tall =18.1+0.890*75=84.85 beats/minute

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