Suppose the estimated regression line for predicting the high ...

[Mimi]

  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 H₀: 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.

[mcarey591]

Answer to Question 1

correct: b

Answer to Question 2

correct: c