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RES 342 Final Exam MCQS Solutions -

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1) What are the critical z-values for a two-tailed hypothesis test if the significant level = 0.01?

2) In classical hypothesis testing, the test statistic is to the critical value what the __________.

3) For a hypothesis test of a single population mean at 95% confidence level, a calculated Z score of 1.7 supports the conclusion that

4) If the paired differences are normal in a test of mean differences, then the distribution used for testing is the

5) One hundred women were polled and 60 reported successfully communicating an automobile problem to an auto repairman. A sample of 150 men had 95 reporting the same success. The value of the test statistic for a test of the equality of proportions is

6) Weekly sales of iPods® at 20 Best Buy® stores are compared before and after installing a new eye-catching display. To determine if the display is effective in increasing sales, what type of statistical test would you perform?

7) When is it appropriate to use the paired difference t-test?

8) A survey of hotels found that the average hotel room rate in New Orleans is $88.42 and the average room rate in Phoenix is $80.61. The survey sampled 50 hotels in each city. The standard deviations were $5.62 and $4.83, respectively. At alpha=.05, it can be concluded that there is a significant different in the rates?

9) If the paired differences are normal in a test of mean differences, the distribution used for testing is the

10) The accountant for Thomas’s Furniture Store is concerned regarding the outstanding receivable owed the company. There has been a cash flow problem and it is believed that the slow collection of accounts receivable is partially the blame. The accountant...