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In 2015, the average cost of attendance at public 2-year colleges and technical schools across the...

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. 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 10420 with a standard deviation of 1488. 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. Calculate the test statistic, calculate the p-value, calculate a 95% confidence interval for the mean cost of attendance at 2-year colleges in Michigan.

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