A sample of 8080 women is obtained, and their heights (in inches) and pulse rate
ID: 3324397 • Letter: A
Question
A sample of 8080 women is obtained, and their heights (in inches) and pulse rates (in beats per minute) are measured. The linear correlation coefficient is 0.2760.276 and the equation of the regression line is ModifyingAbove y with caret equals 18.2 plus 0.930 xy=18.2+0.930x , where x represents height. The mean of the 8080 heights is 62.762.7 in and the mean of the 8080 pulse rates is 73.573.5 beats per minute. Find the best predicted pulse rate of a woman who is 6969 in tall. Use a significance level of alpha equals 0.01=0.01.
Explanation / Answer
The predicted pulse rate of a women
=> Y = 18.2 + 0.93X
=> Y = 18.2 + 0.93*69
=> 82.37
So answer is 82.37