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- 1. Multiple Choice
Which of the following represents the appropriate null & alternative hypotheses?
The mean height of women is greater than 64"
H₀: μ > 64"
Hₐ: μ ≠ 64"
H₀: μ = 64"
Hₐ: μ > 64"
H₀: p > 64"
Hₐ: p ≠ 64"
H₀: p = 64"
Hₐ: p > 64"
- 2. Multiple Choice
Identify the correct null hypothesis:
Is the proportion of babies born male different from 50%? In a sample of 200 babies, 96 were male. Test the claim using a level of significance of 1%.
H0: p = 0.50
H0: µ = 100
H0: p = 0.48
H0: µ = 96
- 3. Multiple ChoiceWhen performing a test about the population proportion, what distribution would you need to use?ztchi-square
- 4. Multiple ChoiceWhich of the following shows a right-tailed test?Ha: µ < 15H0: µ < 15Ha: µ > 15H0: µ > 15
- 5. Multiple ChoiceIn testing hypotheses, which of the following would be strong evidence against the null hypothesis?using a small level of significanceusing a large level of significanceobtaining data with a small p-valueobtaining data with a low test statistic
- 6. Multiple ChoiceA P-value indicates:the probability that the null hypothesis is truethe probability that the alternative hypothesis is truethe probability of obtaining the results (or one more extreme) if the null hypothesis is trueprobability of a Type I error
- 7. Multiple Choice
Suppose the P-value for a hypothesis test is 0.0304. Using a = 0.05, what is the appropriate conclusion?
a) Reject the null hypothesis
b) Reject the alternative hypothesis
c) Fail to reject the null hypothesis
d) Fail to reject the alternative hypothesis
- 8. Multiple Choice
When p-value is greater than alpha we:
Reject Ho
Fail to reject Ha
Fail to reject Ho
Reject Ha
- 9. Multiple Choice
A mayor is concerned about the percentage of city residents who express disapproval of his job performance. His political committee pays for a newspaper ad, hoping to keep his disapproval rating below 21%. They will use a follow up poll to access effectiveness. What are the correct null and alternative hypotheses?
Ho: μ > 21
Ha: μ < 21
Ho: p > .20
Ha: p < .20
Ho: p < .21
Ha: p > .21
Ho: p = .21
Ha: p < .21
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