A sample of 50 women is obtained and their heights in inches

A sample of 50 women is obtained, and their heights (in inches) and pulse rates (in beats per minute) are measured. The linear correlation coefficient is .262 and the equation of the regression line is ^y=18.4 +.910x, where x represents height. The mean of the 50 heights is 63.5 in and the meant of the 50 pulse rates is 74.5 beats per minute. Find the best predicted pulse rate of a woman who is 75 in tall. Use a significance level of a= 0.05.

Solution

Best predicted pulse rate of a woman who is 75 in tall :

= 18.4 +.910x

= 18.4 +.910 * 75

= 86.65 Answer

There are some extra information here than is needed to answer the particular question .

(Also the sig. level of .01 has no relevance since the problem just asks for best predicted rate, not any test of significance).