Stats

MAT 151

Chapter 9

Assignment 1

8 Points

A sample of 10 adult men gave the following data on their heights and weights.

Height (inches)	x	62	62	63	65	66	67	68	68	70	72
Weight (pounds)	y	120	140	130	150	142	130	135	175	149	168

1. Graph the data on a scatter plot.

1. Find the equation of the regression line.

(c) Find the standard error of estimate, Se.

1. Find r (correlation coefficient). Interpret the value of r in the context of

this problem.

1. Find the coefficient of determination. Explain what it means in the context of this problem.

1. Predict the weight of a man whose height is 60 inches.

(g) Find a 90% confidence interval for men of height 60 inches (use your answer from part f).

1. Predict the height of a man whose weight is 160 pounds.