A sample of 70 women is? obtained, and their heights? (in inches) and pulse rate
ID: 2946049 • Letter: A
Question
A sample of
70
women is? obtained, and their heights? (in inches) and pulse rates? (in beats per? minute) are measured. The linear correlation coefficient is
0.215
and the equation of the regression line is
ModifyingAbove y with caret equals 17.7 plus 0.870 xy=17.7+0.870x?,
where x represents height. The mean of the
7070
heights is
63.363.3
in and the mean of the
7070
pulse rates is
75.975.9
beats per minute. Find the best predicted pulse rate of a woman who is
7373
in tall. Use a significance level of
alpha equals 0.05?=0.05.
Explanation / Answer
linear equation: y = 17.7+0.870x
when x = 73
y = =17.7+0.87*73
81.21 beats per minute?