Question 1

The t-distribution is used when the exact value of the population standard deviation is known.

Group of answer choices

True

False

Question 2

The independence condition required for using the Central Limit Theorem can be satisfied if the data come from a random sampling process.

Group of answer choices

True

False

Question 3

The t-distribution is bell-shaped like the normal distribution, but it has tails that are __?__ indicating that observations are more likely to fall beyond two standard deviations from the mean.

Group of answer choices

thicker

thinner

shorter

non-existent

Question 4

In a t-distribution, the degrees of freedom describe the __?__ of the t-distribution.

Group of answer choices

shape

usefulness

normality

correctness

Question 5

As sample size increases, the t-distribution approaches the standard normal distribution.

Group of answer choices

True

False

Question 6

When using the t-distribution, the population standard deviation is used to calculate the sampling error (SE).

Group of answer choices

True

False

Question 7

Paired data is data that has a special __?__ between data pairs.

Group of answer choices

correspondence

normality

difference

sum

Question 8

When analyzing paired data, it's useful to consider the difference in outcome of each pair of observations.

Group of answer choices

True

False

Question 9

When performing a t-test for a single mean with sample size 28, the degrees of freedom would be __?__.

Group of answer choices

27

28

29

30

Question 10

ANOVA is a process that allows one to compare means across many groups.

Group of answer choices

True

False