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jmedina05 jmedina05
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6 years ago
A multiple regression model has:
 a. only one independent variable. c. more than one dependent variable.
  b. only two independent variables. d. more than one independent variable.

Q. 2

In developing an interval estimate for a population mean, a sample of 50 observations was used. The interval estimate was 19.76  1.32 . Had the sample size been 200 instead of 50, the interval estimate would have been:
 a. 19.76  .33
  b. 19.76  .66
  c. 19.76  5.28
  d. None of these choices.

Q. 3

For a multiple regression model, the following statistics are given: Total variation in y = 500, SSE = 80, and n = 25 . Then, the coefficient of determination is:
 a. 0.84 c. 0.3125
  b. 0.16 d. 0.05

Q. 4

If the confidence level is reduced, the confidence interval:
 a. widens.
  b. remains the same.
  c. narrows.
  d. disappears.
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jasminejasmine
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6 years ago
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