Suppose the estimated regression line for predicting the high temperature of the day from the nighttime low temperature is y = 12 + 1.2x. What is the value for the residual when the nighttime low is 45 if the observed daytime high temperature is 70?
a.-4
b.4
c.66
d.25
Question 2 What does the hypothesis H
0:
imply?
a.It implies that the regression line does not have a
y-intercept.
b.It implies that
x is necessary for predicting
y.
c.It implies that
x has no value in predicting
y.
d.It implies that
y is of no use in predicting
x.
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