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