n general, 59% of all college students graduate. We think that the percentage is higher at ASU. We conducted our own survey (n=13) and found that 67% of ASU students graduated. Conduct a hypothesis test to determine if the population mean is actually higher than 0.67. Use = 0.01. Based on your test statistic, do you reject or fail to reject the null hypothesis? Fail to reject H0 Reject H0 Say that the probability of answering "strongly disagree" to a question about fear of crime is 0.45. What is its compliment (i.e., what is the probability that someone answers something other than strongly disagree)? 0.45 0.50 0.55 0.60 Say you've obtained a chi-square of 2.36. You have a chi square critical value of 3.481. Based on this information, what do you conclude? Fail to reject the null hypothesis Reject the Null Hypothesis n general, men that are rapists have typically committed several rapes before getting caught. We decide to ask incarcerated rapists to report how many rapes they've committed in their lifetime. We talk to 120 incarcerated rapists. Their average number of rapes is 5.8. The standard deviation is 2.4. Construct a 99% confidence interval around the mean. What is your UPPER bound for the confidence interval? 5.98 6.37 6.25 6.02 A major of a large city wants to know how long it takes the police in his city to respond to a call for service. In a random sample of 15 citizens who called the police for service, the mayor's research director found that the average response time was 595 seconds, with a standard deviation of 43 seconds. Using a 95% confidence level, what is the lower bound for this confidence interval? 575.15 583.90 560.23 570.35 In general, 25% of all foreclosures are purchased by banks. We think that the percentage is different from this foreclosures which are purchased by property investors. We conducted our own survey (n=200) and found that 36% of foreclosures were purchased by investors. Conduct a hypothesis test to determine if the population mean is different. Use = 0.01. Based on your test statistic, do you reject or fail to reject the null hypothesis?Fail to reject H0 Reject H0 In general, 45% of all cases are acquitted. We think that the percentage is different from this for corruption cases. We conducted our own survey (n=51) and found that 72% of corruption cases were acquitted. Conduct a hypothesis test to determine if the population mean is different. Use = 0.05. What is your test statistic? 3.01 2.76 3.88 3.96 One survey asked respondents \"Do you agree that police officers should carry Conducted Electrical Devices, like Tasers?\" About 78% (p = 0.78) of respondents agreed. We think that the population proportion is higher than 0.78. We conducted our own survey (n=101) and found that 85% of respondents agreed with the above question. Conduct a hypothesis test to determine if the population mean is actually higher than 0.78. Use = 0.05. What is your test statistic? 1.7 8 1.9 7 1.7 0 2.0 1 For the table below, what is the expected frequency for Yes Demoted and Pretty Happy? (Remember that you don't need to do all the expected frequencies to get just one...) General Happiness Very Pretty Happy Happy Were Demoted ? Total 7 543 14 Not Too Happy Total Yes 5 12 7 24 No 294 545 99 938 299 557 106 962 3 In general, 25% of all foreclosures are purchased by banks. We think that the percentage is different from this foreclosures which are purchased by property investors. We conducted our own survey (n=200) and found that 36% of foreclosures were purchased by investors. Conduct a hypothesis test to determine if the population mean is different. Use = 0.01. Based on your test statistic, do you reject or fail to reject the null hypothesis?Fail to reject H0 Reject H0 In general, 45% of all cases are acquitted. We think that the percentage is different from this for corruption cases. We conducted our own survey (n=51) and found that 72% of corruption cases were acquitted. Conduct a hypothesis test to determine if the population mean is different. Use = 0.05. What is your test statistic? 3.01 2.76 3.88 3.96 One survey asked respondents \"Do you agree that police officers should carry Conducted Electrical Devices, like Tasers?\" About 78% (p = 0.78) of respondents agreed. We think that the population proportion is higher than 0.78. We conducted our own survey (n=101) and found that 85% of respondents agreed with the above question. Conduct a hypothesis test to determine if the population mean is actually higher than 0.78. Use = 0.05. What is your test statistic? 1.7 8 1.9 7 1.7 0 2.0 1 For the table below, what is the expected frequency for Yes Demoted and Pretty Happy? (Remember that you don't need to do all the expected frequencies to get just one...) General Happiness Very Pretty Happy Happy Were Demoted ? Total 7 543 14 Not Too Happy Total Yes 5 12 7 24 No 294 545 99 938 299 557 106 962 3