Question

The age (in years) and the number of hours of sleep in one night for seven adults are given below.

1. Find an equation of the regression line for the data.

2. Use the regression equation to predict the value of ?? for each of the ??-values, if

   meaningful. If the ??-value is not meaningful to predict the value of ??, explain why

   Age x	35	20	59	42	68	38	75
   Hrs of sleep y	7	9	5	6	5	8	4

   Predict if these values are meaningful or not x=16, x=25 , x=85

Answer 1

from above: regression equation =10.450+(-0.086)*x (please take care of number of decimals as required

a)

X= 16, not meaningful since falls outside the range of sample x values

b)

for x=25:

predicted val=10.45+25*-0.086=

8.30

c)

X= 85, not meaningful since falls outside the range of sample x values