Suppose that, for some hypothesis test, a=0.05 and the P-value is computed to be 0.754. What is the appropriate conclusion?
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- Find the P-value for a left-tailed hypothesis test with a test statistic of z= - 1.89. Decide whether to reject H, if the level of significance is a = 0.05. P-value = (Round to four decimal places as needed.)13% of all Americans suffer from sleep apnea. A researcher suspects that a different percentage of those who live in the inner city have sleep apnea. Of the 390 people from the inner city surveyed, 70 of them suffered from sleep apnea. What can be concluded at the level of significance of a = 0.10? b. The null and alternative hypotheses would be: Ho: ? 8 Select an answer O |(please enter a decimal) H1: ? E Select an answer O (Please enter a decimal) c. The test statistic ? 6 (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is ? O a f. Based on this, we should Select an answer the null hypothesis.Normally only about 19% of people who try to quit smoking succeed, but sellers of a motivational tape claim that listening to their recorded messages can help people quit (i.e., more than 19% of the people who use the tapes will successfully quit). Let p represents the percentage of people who have listened to the recorded messages and have successfully quit. Match the appropriate null and alternative hypotheses, based on the sellers' claim. H,: p = 0.19 p> 0.19 p2 0.19 ps 0.19 p 0.19 p2 0.19 ps 0.19 p < 0.19 Op- 0.19 Do you consider a Type I or Type Il error a more serious mistake here? Why? Your answer should make it clear what Type I and Il errors are in this context.
- Suppose are running a study/poll about the proportion of voters who prefer Candidate A. You randomly sample 102 people and find that 70 of them match the condition you are testing.Suppose you are have the following null and alternative hypotheses for a test you are running:H0:p=0.68Ha:p<0.68Calculate the test statistic, rounded to 3 decimal places z=Suppose are running a study/poll about the proportion of men over 50 who regularly have their prostate examined. You randomly sample 81 people and find that 71 of them match the condition you are testing.Suppose you are have the following null and alternative hypotheses for a test you are running:H0:p=0.87Ha:p≠0.87Calculate the test statistic, rounded to 3 decimal places.In a one-tail hypothesis test where you rejected Ho only in the upper tail, what is the value is Zstat =+2.00?
- Let’s suppose that in the U.S. population, 20% of people make more $100,000 a year. We would like to see if it is higher than this for graduates. The null and alternative hypotheses would then be H0 : u <= 0.2 Ha: > 0.2 In a survey given to a sample of graduates, we find that 38 out of 200 earned more than $100,000. What is the associated p-value of the test? a. 0.6368 b. 0.0576 c. 0 d. 0.3632A police office claims that the proportion of people wearing seat belts is less than 65%. To test this claim, a random sample of 200 drivers is taken and its determined that 126 people are wearing seat belts. The following is the setup for this hypothesis test: Ho :p-0.65 Ha : p < 0.65 In this example, the p-value was determined to be 0.277 come to a conclusion and interpret the results for this hypothesis test for a proportion (use a significance level of 5%) Select the correct answer below: O The decision is to reject the Null Hypothesis. The conclusion is that there is enough evidence to support the claim The decision is to fail to reject the Null Hypothesis. The conclusion is that there is not enough evidence to support the claimAccording to a reputable magazine, 35% of people in a certain large country have sleepwalked at least once in their lives. Suppose a random sample of 200 people showed that 48 reported sleepwalking. The null and alternative hypotheses for a test that would test whether the proportion of people who have sleepwalked is 0.35 are Ho: p=0.35 and H p#0.35, respectively. The conditions for such a test are satisfied. Use the technology output provided to determine the test statistic and p-value for the test, and provide a conclusion. Use a significance level of 0.05 Question Help Click the icon to view the technology output. Determine the test statistic. (Round to two decimal places as needed.) Determine the p-value. p-value = (Round to three decimal places as needed.) What is the conclusion to this test? Ho. There sufficient evidence to conclude that the proportion of people who have sleepwalked 0.35. Technology Output Hypothesis test results: p: Proportion of successes Ho: p= 0.35 HA: p#0.35…
- Suppose you wish to conduct a test of the research hypothesis that the median of a population is greater than 78. You randomly sample 15 measurements from the population and determine that 10 of them exceed 78. Set up and conduct the appropriate test of hypothesis at the 0.10 level of significance. Be sure to specify all necessary assumptions. What are the null and alternative hypotheses for this hypothesis test? A. Ho: n = 78 Ha: 178 C. Ho: n=10 Ha:n> 10 Ε. Ηρ:η=78 Ha:n78 Ho: n=10 Hg: η < 10 OF. Ho: n = 10 Ha: 110Suppose that your 95% confidence interval for p is (0.68, 0.74). Based on the confidence interval what would your decision be for the hypothesis test H0: p=0.8 versus H1:p≠0.8 at the α=0.05 level?which of the following statements is true if when using null hypothesis testing, our p value (in the sig column of spss output) is 0.069? -reject the null hypothesis -daily to reject the null hypothesis -reject the alternative hypothesis -fail to reject the alternative hypothesis