What is the regression equation

Reference no: EM131381742

Regress Y against X with the following data from a random sample of 15 observations:

X	Y
12	100
4	60
10	96
15	102
6	68
4	70
13	102
11	92
10	95
18	125
20	134
22	133
8	87
20	122
11	101

a. What is the regression equation?

b. What is the 90% confidence interval for the slope?

c. Test the null hypothesis "X does not affect Y " at an α of 1%.

d. Test the null hypothesis "the slope is zero" at an α of 1%.

e. Make a point prediction of Y when X = 10.

f. Assume that the value of X is controllable. What should be the value of X if the desired value for Y is 100?

g. Construct a residual plot. Are the residuals random?

h. Construct a normal probability plot. Are the residuals normally distributed?

Reference no: EM131381742

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