Self-Check 9.1, 9.4
- Page ID
- 36510
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Name:___________________________________Date:__________________Row:___________
Self-Check 9.1, 9.4
- We want to test whether the mean height of eighth graders is 66 inches. State the null and alternative hypotheses.
- On a state driver’s test, about 40% pass the test on the first try. We want to test if more than 40% pass on the first try.
- We want to test the claim that the mean is greater than 12.
- Find the p-value for each test, state the conclusion about the null hypothesis a. α = 0.05, test statistic = 1.15
H0: p = 0.4
H1: p ≠ 0.4
b. α = 0.01, test statistic = 2.5
H0: µ = 12 H1: µ > 12
5. It’s a Boy Genetics Labs claim their procedures improve the chances of a boy being born. The results for a test of a single population proportion are as follows: H0: p= 0.50, H1: p> 0.50, α= 0.01, p-value = 0.025
- State the conclusion about the null hypothesis
- State the conclusion that addresses the original claim.
6. Suppose a baker claims that his break height is more than 15cm.
- State the null and alternative hypothesis.
- Use a 0.01 significance level and the p-value of 0.0013 to state the conclusion about the null hypothesis.
- State the conclusion that addresses the original claim.