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The average cost of tuition at a high school is $8,500 but a student believes the...

The average cost of tuition at a high school is $8,500 but a student believes the average cost is actually more. A large study surveyed 350 highschools and found the average cost to be $8,745. The population standard deviation is $1,200. 1-a equals 0.95 and a equals 0.05

1. what are the null and alternative hypothesis

2. Draw a picture of the test statistics and include rejection regions or nonrejection

3. what is the test statistic

4. What is the probable population mean

5. what is the margin of error

6. construct 95% confidence interval estimate for the population mean

7. what is the p-value based on the test statistic

8. State the decision rules for the critical approach and p-value approach. What is conclusion about the average cost

Math   Statistics-And-Probability   
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