Eleven-year-old boys in The Netherlands have a mean height of 149 centimeters an

Question

Eleven-year-old boys in The Netherlands have a mean height of 149 centimeters and a standard deviation of 7 centimeters. Assume that boys' heights are uni-model and symmetric. Use the Emprical Rule to find the percentage that a random boy has a height in between 142 centimeters and 156 centimeters. The table shows the number of people living in a house and the weight of trash (in pounds) at the curb just before trash pickup. Find the correlation coefficient gamma between these numbers by completing the table and then using the formula of gamma.

Explanation / Answer

The correlation coefficient is

From Excel

r=0.9498

x y x 1 y 0.949833 1

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