A Medical Researcher Wishes to See Whether There Is a Relationship

Essay

A medical researcher wishes to see whether there is a relationship between a personʹs age, cholesterol level,
and systolic blood pressure. Eight people are randomly selected. The data are listed below. $$\begin{array} { c | c | c | c } \text { Person } & \text { Age } & \begin{array} { c } \text { Cholesterol } \\\text { level }\end{array} & \begin{array} { c } \text { Blood } \\\text { Pressure }\end{array} \\\hline 1 & 38 & 220 & 116 \\2 & 41 & 225 & 120 \\3 & 45 & 200 & 123 \\4 & 48 & 190 & 131 \\5 & 51 & 250 & 142 \\6 & 53 & 215 & 145 \\7 & 57 & 200 & 148 \\8 & 61 & 170 & 150\end{array}$$ a)Find a multiple regression equation for the data.
b)What is the standard error of estimate?
c)What is the coefficient of determination?
d)Interpret the results in (c).
e)If a person 50 years old with a cholesterol reading of 220 is selected, what is that personʹs predicted blood
pressure reading?