Question

1. Parametric statistics are appropriate when:

Select one:

a. the sample size is small.

b. the data are nominal data.

c. the sampling distribution is normally distributed

d. All of the above.

2. The is a symmetrical, bell‑shaped distribution that is contingent on sample size. It has a mean of zero and a standard deviation equal to one.

Select one:

a. chi square distribution

b. t distribution

c. ANOVA

d. F distribution

3. In the legal profession, a Type I error would be equivalent to:

Select one:

a. none of the above.

b. flipping a coin to determine if a man goes to prison or not

c. sending an innocent man to prison

d. setting a guilty party free

4. All of the following are steps involved in calculating the chi‑square statistic, EXCEPT:

Select one:

a. Calculate the chi square value.

b. Formulate the null hypothesis and determine the expected frequency of each answer.

c. Calculate the sample mean.

d. Determine the appropriate significance level.

5. The idea that “there is a significant difference in brand preference between males with incomes under $50,000 and males with incomes over $50,000” is an example of:

Select one:

a. Type II error.

b. the alternative hypothesis.

c. Type I error.

d. the null hypothesis.

6. What type of error is made when the null hypothesis is false, but is not rejected?

Select one:

a. Type III

b. Type I

c. Type II

d. sampling error

7. Statistically describing the relationship between two variables at one time, such as sales volume and gross national product, requires .

Select one:

a. univariate data analysis

b. bivariate data analysis

c. nonparametric data analysis

d. multivariate data analysis

8. The idea that “there is no difference in buying behavior between males and females in the age group 25-49” is an example of:

Select one:

a. the alternative hypothesis.

b. the null hypothesis.

c. Type I error.

d. Type II error.

9. A private art museum sponsoring a program of summer art classes for children expects an equal number of boys and girls. A random sample of its list of students shows there are more girls than boys. The appropriate univariate test for statistical significance is the:

Select one:

a. t test

b. chi square test

c. F-test

d. Z test.

10. The region of ______________ shows those values that are very unlikely to occur if the null hypothesis is true, but relatively probable if the alternative hypothesis is true.

Select one:

a. rejection

b. nonparametric

c. alternatives

d. acceptance

Answer 1

1. Parametric statistics are appropriate when:

Select one:

c. the sampling distribution is normally distributed

2. The is a symmetrical, bell‑shaped distribution that is contingent on sample size. It has a mean of zero and a standard deviation equal to one.

Select one:

b. t distribution

3. In the legal profession, a Type I error would be equivalent to:

Select one:

c. sending an innocent man to prison

4. All of the following are steps involved in calculating the chi‑square statistic, EXCEPT:

Select one:

c. Calculate the sample mean.

5. The idea that “there is a significant difference in brand preference between males with incomes under $50,000 and males with incomes over $50,000” is an example of:

Select one:

b. the alternative hypothesis.

6. What type of error is made when the null hypothesis is false, but is not rejected?

Select one:

c. Type II

7. Statistically describing the relationship between two variables at one time, such as sales volume and gross national product, requires .

Select one:

b. bivariate data analysis

8. The idea that “there is no difference in buying behavior between males and females in the age group 25-49” is an example of:

Select one:

b. the null hypothesis.

9. A private art museum sponsoring a program of summer art classes for children expects an equal number of boys and girls. A random sample of its list of students shows there are more girls than boys. The appropriate univariate test for statistical significance is the:

Select one:

d. Z test.

10. The region of ______________ shows those values that are very unlikely to occur if the null hypothesis is true, but relatively probable if the alternative hypothesis is true.

Select one:

a. rejection

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