Quiz: Significance

1. Selecting the significance level α is based on
a. desired strength of evidence against the null hypothesis.
b. an acceptable probability of a Type I error.
c. both of the reasons in choices A and B.
2. The conditional probability of obtaining the sample statistic, or one more extreme, given that the null hypothesis is true is called the
a. beta.
b. p-value.
c. power.
3. The decision to reject a null hypothesis can be made by comparing
a. a p-value to the significance level.
b. a test statistic to a critical value.
c. either of the methods in choices A and B.
4. A null hypothesis should be rejected when the p-value is
a. larger than the significance level.
b. equal to the significance level.
c. less than the significance level.
5. Which is not a typical significance level?
a. 0.01
b. 0.05
c. 0.25

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