SOLUTION: 4. The data below are the ages and systolic blood pressure (measured in millimeters of mercury) of 9 randomly selected adults.
Age, x 38 41 45 48 51 53 57 61 65
Pressure, y 116
Algebra ->
Probability-and-statistics
-> SOLUTION: 4. The data below are the ages and systolic blood pressure (measured in millimeters of mercury) of 9 randomly selected adults.
Age, x 38 41 45 48 51 53 57 61 65
Pressure, y 116
Log On
Question 312064: 4. The data below are the ages and systolic blood pressure (measured in millimeters of mercury) of 9 randomly selected adults.
Age, x 38 41 45 48 51 53 57 61 65
Pressure, y 116 120 123 131 142 145 148 150 152
a. Find the equation of the regression line for the given data. Round the line values to the nearest two decimal places. (2.5 points) Show your work.
b. Using the equation found in part a, predict the pressure when the age is 50. Round to the nearest mm. (2.5 points)
You can put this solution on YOUR website! a) Xave=, Yave=
Sum of squares x terms (SSXX)=
Sum of squares y terms (SSYY)=
Sum of squares xy terms (SSXY)=
b=SSXY/SSXX=
b'=SSXY/SSYY=
r^2=b*b'=
a=Yave-b(Xave)=
.
.
.
b)
135 mm
