Chapter 8 & 9 Vocabulary

3. Occurs if H0 is rejected when H0 is true.
6. The probability that the statistic would take a value as extreme as or more extreme than the one actually observed.
10. The claim about the population that we are trying to find evidence FOR.
11. a factor used to compute the margin of error.
13. The probability of a Type II error.
15. Tells how close the estimate tends to be to the unknown parameter in repeated random sampling.
16. An interval calculated from sample data, which has the general form statistic ± (critical value)(standard deviation of statistic).
18. Assesses the evidence provided by data about some claim concerning a population.
19. The specific value of a point estimator.
20. When the standard deviation of a statistic is estimated from data.

1. The probability that a test does reject Ho when an alternative is true.
2. an interval estimate combined with a probability statement.
4. When the p-value is less than the pre-determined alpha () level.
5. The claim tested by a statistical test. A statement of "no difference."
7. Occurs if H0 is not rejected when H0 is false.
8. A statistic that provides an estimate of a population parameter.
9. The value of the significance level stated as the probability.
12. the critical value for the t distribution with df = n - 1.
14. A probability value that provides the criterion for rejecting a null hypothesis in a statistical test.
17. indicates how many standard deviations an element is from the mean.