10.1 wks 2

4. The average amount of caffeine per cup of regular coffee served at the Jackson Coffee Company in 2018 was 121 milligrams. A new brewer for the company thinks that the amount of caffeine per cup has gone up this vear. She decides to collect some data and perform a hypothesis test. a. State the null and alternative hypotheses (in both symbols & words) for the test she will run. Symbols: Words: (With Context) b. Suppose H is not rejected, write the conclusion. c. Suppose the true mean is actually 121, and the brewer rejected the null hypothesis. Which type of error is this, if any? (Circle One) Type l Type II Correct Decision 5. Determine whether the following statements are true or false. If it is false, rewrite it as a true statement or explain why it is false. a. H :0 > 8.7 is an example of a one-tailed alternative hypothesis. TRUE | FALSE b. If a = 0. 04 for a hypothesis test, then the probability of a type ll error for that test is 4% TRUE | FALSE