Answer Happy

(1 point) In 2015, the average cost of attendance at public 2-year colleges and technical schools across the United States was $12,260. A researcher wants to know if the 2-year colleges in Michigan are less expensive. 1. A QQ-plot of the cost of attendance at public 2-year colleges and technical schools is shown below. Based on this plot, is it reasonable to use this data to evaluate the research question? Why or why not? Yes because The population data distribution seems approximately normal. Normal Q-Q Plot Sample Quarties Theoretical Quare The researcher decides to conduct a hypothesis test. They take a random sample of 15 such schools in Michigan and find a sample average of 10432 with a standard deviation of 1541. Conduct a hypothesis test to determine if the average cost of attendance at 2-year colleges in Michigan is lower than the national average. Round all numeric results to 4 decimal places. 2. Which set of hypotheses should the researcher use? A. H: = 12,260 vs. HA # 12,260 OB. Ho: u = 12,260 vs. HAH> 12,260 OC. Ho u = 12,260 vs HA4< 12,260 3. Calculate the test statistic. 4. Calculate the p-value. 5. Based on the p-value, we have: O A. some evidence O B. extremely strong evidence O C. strong evidence D. little evidence O E. very strong evidence that the null model is not a good fit for our observed data. 6. Calculate a 95% confidence interval for the mean cost of attendance at 2-year colleges in Michigan. (S