If we reject the null hypothesis, we conclude that:

If we reject the null hypothesis, we conclude that:
a. there is enough statistical evidence to infer that the alternative hypothesis is true.
b. there is not enough statistical evidence to infer that the alternative hypothesis is true.
c. there is enough statistical evidence to infer that the null hypothesis is true.
d. there is not enough statistical evidence to infer that the null hypothesis is true.

Q. 2

In stepwise regression the dependent variable must be ____________________.
Fill in the blank(s) with correct word

Q. 3

In testing the hypothesis H0: = 100 vs. H1: > 100, the p-value is found to be 0.074, and the sample mean is 105 . Which of the following statements is true?
a. The probability of observing a sample mean at least as large as 105 from a population whose mean is 100 is 0.074.
b. The probability of observing a sample mean smaller than 105 from a population whose mean is 100 is 0.074.
c. The probability that the population mean is larger than 100 is 0.074.
d. None of these choices.

Q. 4

____________________ regression is an iterative procedure that adds and deletes one independent variable at a time to/from the regression model.
Fill in the blank(s) with correct word

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If we reject the null hypothesis, we conclude that:

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