Performance of most recent class is significantly better

Assignment Help Basic Statistics

Reference no: EM13150112

A professor gives his class a final examination that, he knows from years of experience, yields a population mean of 88. His present class of 22 obtains a mean of 92 and a standard deviation of 4. Is he correct in assuming that the performance of the most recent class is significantly better than that of other classes? He set his significance level at ? = .05 Null Hypothesis Alternative Hypothesis Critical Region Test statistic A. The current class mean is equal to the population mean. B. The current class mean is less than or equal to the population mean. C. The current class mean is not equal to the population mean. D. The current class mean is greater than the population mean. E. 1.721 F. ±2.080 G. 4.7 H. 2.2.

Reference no: EM13150112

Questions Cloud

What is the most this individual would pay to play a game : An individual has a certainty equivalent coefficient equal to 0.4. What is the most this individual would pay to play a game that pays $50 or $30 with equal probability?

Perform direct tests of account balances : An auditor determines that management integrity if high, the risk of account misstatements is low, and the client's internal controls are effective. Which of the following conclusions can be reached regarding the need to perform direct tests of ac..

Work in process inventory at the beginning of the period : Kent Company had 800 units of product in its work in process inventory at the beginning of the period. During the period 3,000 additional units of product were started.

What will the volume be : A sample of nitrogen gas occupies 1.55 L at 27.0 degrees Celsius and 1.00atm. What will the volume be at -100.0 degrees Celsius and the same pressure?

Performance of most recent class is significantly better : Class of 22 obtains a mean of 92 and a standard deviation of 4. Is he correct in assuming that the performance of the most recent class is significantly better than that of other classes?

Explain how many moles of excess base are present : How many moles of excess base are present? How many additional mL of 0.100 M HCl would be required to neutralize the solution?

Calculate how many grams of quicklime can be produced : Limestone (CaCO3) is decomposed by heating quicklime (CaO) and carbon dioxide. Calculate how many grams of quicklime can be produced from 9.0 kg of limestone.

Does she save/borrow more or less : Suppose the interest rate increases. What happens to her period 1 consumption? Her period 2 consumption? Does she save/borrow more or less?

Admission/withdrawal of partners : Admission/Withdrawal of Partners

User Account

All Pages