QNT 275 Finals 2017 Latest Version A+ Score

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1.       A linear regression:

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2.       For small degrees of freedom, the chi-square distribution is

3.       The p-value is the

4.       Two paired or matched samples would imply that

5.       The graph of a cumulative frequency distribution is a(n)

6.       A qualitative variable is the only type of variable that

7.       We can use the analysis of variance procedure to test hypotheses about

8.       A researcher wants to test if elementary school children spend less than 30 minutes per day on homework. The alternative hypothesis for this example will be that the population mean is

9.       A continuous random variable x has a right-skewed distribution with a mean of 80 and a standard deviation of 12. The sampling distribution of the sample mean for a sample of 50 elements taken from this population is:

10.   In a one-way ANOVA, we analyze only one

11.   Which of the following pairs of events are mutually exclusive

12.   For a one-tailed test, the p-value is

13.   What is the critical value of t for the hypothesis test

14.   In a hypothesis test, a Type II error occurs when

15.   A quantitative variable is the only type of variable that can

16.   You toss a coin nine times and observe 3 heads and 6 tails. This event is a

17.   In a hypothesis test, a Type I error occurs when

18.   What is the critical value of z for the hypothesis test

19.   A researcher wants to test if the mean annual salary of all lawyers in a city is different than $110,000. The null hypothesis for this example will be that the population mean is

20.   The mean of a discrete random variable is its

21.   For a goodness-of-fit test, the frequencies obtained from the performance of an experiment are the

22.   An error that occurs because of chance is called

23.   You randomly select two households and observe whether or not they own a telephone answering machine. Which of the following is a simple event

24.   To make tests of hypotheses about more than two population means, we use the

25.   The mean of a discrete random variable is the mean of its

26.   The alternative hypothesis is a claim about a

27.   If you divide the number of elements in a sample with a specific characteristic by the total number of elements in the sample, the dividend is the

28.   The regression model y = A + Bx + e is

29.   The regression model y = A + Bx  is

30.   Which of the following assumptions is not required to use ANOVA



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