# QNT 561 Final Exam Answers

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**QNT 561 Final Exam**

1. A difference between calculating the sample mean and the population mean is

2. Which of the following measures of central location is affected most by extreme values?

3. Which level of measurement is required for the median?

4. In which of the following distributions is the probability of a success usually small?

5. Which of the following is not a requirement of a probability distribution?

6. Which of the following is not a requirement of a binomial distribution?

7. A sample

8. The difference between the sample mean and the population mean is called the

9. Suppose a population consisted of 20 items. How many different sample of n = 3 are possible?

10. A point estimate is

11. We wish to develop a confidence interval for the population mean. The population follows the normal distribution, the standard deviation of the population is 3, and we have a sample of 10 observations.

12. A confidence interval

13. The Special Rule of Addition is used to combine

14. We use the General Rule of Multiplication to combine

15. An experiment is a

16. Which of the following statements is true regarding a sample?

17. Which of the following statements is true regarding a population?

18. A nominal scale variable is

19. In a two-sample test of means for independent samples, the equal sign always appears in

20. The alternate hypothesis

21. Which of the following is a requirement for a two-sample test of proportions?

22. In a contingency table

23. To conduct a nonparametric test the

24. In a goodness-of-fit test where the sample size is 200, there are 5 categories, and the significance level is .05. The critical value of X2 is

25. A dummy variable or indicator variable

26. The multiple standard error of estimate is

27. A correlation matrix

28. The difference between a random variable and a probability distribution is:

29. The mean and the variance are equal in

30. Events are independent if

31. Which of the following is a correct statement about a probability?

32. The ratio scale of measurement

33. In a two-sample test of means for independent samples, we use the z distribution when

34. Which of the following is not a characteristic of the X2

35. In a multiple regression equation

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