A sample of 70 women is obtained, and their heights (in inches) and pulse rates

Question

A sample of 70 women is obtained, and their heights (in inches) and pulse rates (in beats per minute) are measured. The near correlation coefficient is 0.238 and the equation of the regression line is y = 18.1 + 0.940x, where x represents height. The mean of the 70 heights is 63.1 in and the mean of the 70 pulse rates is 76.4 beats per minute. Find the best predicted pulse rate of a woman who is 75 in tall. Use a significance level of alpha = 0.05. The best predicted pulse rate of a woman who is 75 in tall is beats per minute. (Type an integer or decimal rounded to two decimal places as needed.)

Explanation / Answer

Here the correlation is not significant and hence the best predicted pulse rate of a woman who

is 75inches tall = mean of the 70pulse rates= 76.4 beats per minute

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