CAN YOU DO in 20 minutes
Question 1
The pooled-variance t test assumes that the two populations are normally distributed, with equal variances.
Select one:
True
False
Question 2
For situations in which the two independent populations can be assumed to be normally distributed but cannot be assumed to have equal variances, use the separate-variance t test
Select one:
True
False
Question 3
The F test for the ratio of two variances determines whether there is evidence of a difference in the two population means.
Select one:
True
False
Question 4
In matched samples, items or individuals are paired together according to some characteristic of interest.
Select one:
True
False
Question 5
In testing for a difference between two variances using the F test, one assumes that each of the two populations is normally distributed.
Select one:
True
False
Question 6
Analysis of variance, known by the acronym ANOVA, allows statistical comparison among samples taken from two normally distributed populations.
Select one:
True
False
Question 7
One-way ANOVA is a two-part process, and both parts are always carried out.
Select one:
True
False
Question 8
To use the one-way ANOVA F test, one must make three assumptions.
Which is NOT one of those assumptions?
Select one:
a. Homogeneity of variance (the variances of the c groups are equal)
b. Homogeneity of means (the means of the c groups are equal)
c. Normality of the c groups from which the samples are selected
d. Randomness and independence of the samples selected
Question 9
The χ 2 test can be used to to compare differences among more than two independent populations.
Select one:
True
False
Question 10
Rejecting the null hypothesis in a χ 2 test of equality of proportions in a 2c table enables one to reach only the conclusion that not all c population proportions are equal.
True or False?: The multiple-comparisons Marascuilo procedure determines which pairs of sample proportions differ by comparing every pair of c sample proportions.
Select one:
True
False
