Do the following for the case below. a. State the null and alternative hypotheses for a hypothesis test. b. Describe the two possible outcomes of the test, using the context of the given situation. The governor claims that the percentage of adults over 24 who have graduated from high school is greater than 75%, the national average. What is the null hypothesis? A. The percentage of adults over 24 who have graduated from high school is 75%. B. The percentage of adults over 24 who have graduated from high school is greater than 75%. The national average for the percentage

Gun ownership. A friend claims that 33% or less Americans have a gun in their household. To test this claim, I survey 200 random Americans and find that 64 of them have a gun in their household. What should I conclude about my friend's claim?(a) Select the correct null and alternative hypotheses. Ho: p = 0.33Ha: p > 0.33 Ho: p = 0.33Ha: p < 0.33 Ho: p = 0.33Ha: p ≠ 0.33 Ho: p = 0.32Ha: p > 0.32 Ho: p = 0.32Ha: p ≠ 0.32 Ho: p = 0.32Ha: p < 0.32 (b) Find the p-value (round to three significant figures). (c) Write the final conclusion using everyday language using a 5% level of significance. There is not sufficient evidence to reject my friend's claim. There is sufficient evidence to reject my friend's claim. There is sufficient evidence to support my friend's claim. There is not sufficient evidence to support my friend's claim.

A man is on trial accused of murder in the first degree. The prosecutor presents evidence that he hopes will convince the jury to reject the hypothesis that the man is innocent. This situation can be modeled as a hypothesis test with the following hypotheses:        Explain the meaning of a Type I error.

1. Explain the concept of a hypothesis test, and why it is used in research and science. 2. Conduct a hypothesis test, by executing the following steps: a. Identifying the correct type of test. b. Creating the two hypotheses. c. Organizing the information from the problem. d. Calculating any missing statistics. e. Finding the P-value on your calculator. f. Making the decision of the test. g. Writing a sentence which embodies your decision. 3. Differentiate between a 1-sided and 2-sided test. 4. Differentiate between a 1-proportion z-test and 2-proportion z-test.

Advertising and Sales. use the technology of your choice to perform the tests of hypotheses in parts (a) and (b).

Which of the following statements are TRUE? I. Increasing the significance level of a test will increase the chance of erroneously rejecting a true null hypothesis. II. Increasing the significance level of a test will increase the chance of erroneously failing to reject a false null hypothesis. Only statement I is true. Neither statement is true. Only statement II is true. Both statements are true.

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According to the most recent General Social Survey, 70% of adults watch TV nightly. A researcher believes that the proportion of college students who watch TV nightly is less than this. To test this claim the research samples 400 college students and finds that 276 watch TV nightly. At the 0.05 level of significance does this data provide evidence to suggest that the proportion of college students who watch TV nightly is less than 70%? Select the correct conclusion for the hypothesis test:   Question 12 options:   Fail to reject the null hypothesis because the p-value is less than the level of significance.   Fail to reject the null hypothesis because the p-value is greater than the level of significance.   Reject the null hypothesis because the p-value is less than the level of significance.   Reject the null because the p-value is greater than the level of significance.

Identify the appropriate hypothesis test for each of the following research situations. A researcher conducts a between-subjects study to determine whether there is a significant difference in problem-solving ability between older adults who are generally happy and those who are generally unhappy. A researcher gives a questionnaire to a group of 30-year-old married adults, including questions to measure the stability of their own marriages and the stability of their parents’ marriages. The researcher would like to know whether the two variables are related. A researcher obtains a sample of 100 college students between 18 and 21 years old and a similar sample of 100 young adults who have no college experience. The researcher would like to know if there is a difference in the proportion of registered voters for the two groups.

a. Let p be the population proportion of correct polygraph results. Identify the null and alternative hypotheses. Choose the correct answer below. b. The test statistic is z= c. The​ P-value is enter your response here d. Identify the conclusion about the null hypothesis and the final conclusion that addresses the original claim.