Stats Ch 11 Test
When conducting a two-tailed hypothesis test for a population proportion, if the null hypothesis is rejected, what would be the result if only a one-tailed test was conducted? a. Accept the null hypothesis b. Fail to reject the alternative hypothesis c. Fail to reject the null hypothesis d. Reject the null hypothesis
D
Which of the following is an appropriate set of hypothesis statements? a. Ho: pi = 98, Ha: pi < 98 b. Ho: u = 2344, Ha: u not equal to 2344 c. Ho: pi = .55, Ha: pi > .49 d. Ho: pi = .12, Ha: u not equal to .12 e. Ho: u greater than or equal to 360, Ha: u < 360
B
When conducting a hypothesis test about a population mean, which of the following is the correct conclusion when the P value = .0734 and the significance level = .05? a. Reject the null hypothesis b. Fail to reject the null hypothesis c. Accept the null hypothesis d. Fail to reject alternative hypothesis
B- fail to reject
The level of significance is which of the following, given that the null hypothesis is true? a. The probability of not getting a type I error b. The probability of not getting a type II error c. The probability of a type I error d. The probability of a type II error
C- probability of type I error bc that's the probability of rejecting the null hypothesis (so you'd be in the rejection zone)
Type I and II errors can be eliminated COMPLETELY as long as which of the following is done? a. The sampling distribution is made normal b. The conditions are met c. Increase the sample size d. Decrease the sample size e. None of the above
E- none of the above
STATE NULL AND ALTERNATIVE HYPOTHESES, TYPE I, AND TYPE II ERROR: It is reported that the average debt for college juniors is $2672. The student senate at a university feels that their juniors have a much larger debt so they conduct a survey to test the claim.
Ho: u = 2672, Ha: u > 2672 TYPE I: the average junior debt is more than $2672, when it actually is not. TYPE II: the average junior debt is not greater than $2672, when it actually is.
STATE NULL AND ALTERNATIVE HYPOTHESES, TYPE I, AND TYPE II ERROR: The yearly consumption of soda per person was 42 gallons. In a sample of 100 randomly selected people, a researcher found the average consumption was 46.4 gallons. Is this statistically significantly different?
Ho: u = 42, Ha: u not equal to 42 TYPE I: the average consumption is not equal to 42 gallons, when it actually is. TYPE II: the average consumption is equal to 42 gallons, when it actually is not.