1.A researcher is interested in the eating behavior of rats and selects a group of 30 mice to be tested in a research study.The group of 30 mice is an example of a _______________.

a)Population

b)statistic

c)sample

d)parameter

2.For any distribution, what is the z-score corresponding to the mean?

a)0

b)1

c)N

d)Cannot be determined from the information given.

3.A Determining a person's reaction time (in milliseconds) would involve measurement on a(n) ______________ scale of measurement.

a)nominal

b)ordinal

c)interval

d)ratio

4.A researcher uses an anonymous survey to investigate the study habits of American college students.The entire group of American college students is an example of a(n) _______________.

a)sample

b)statistic

c)population

d)parameter

5.A researcher measures eye color for a sample of n=50 people. Which measure of central tendency would be appropriate to summarize the measurements?

a)mean

b)median

c)mode

d)any of the three measures could be used

6.For a population with = 80 and = 10, what is the z-score corresponding to X = 75?

a)+0.25

b)-0.50

c)+1.50

d)-1.50

7.Any individual with a negative z-score has a score greater than the mean.

a)True

b)False

8.All probabilities can be expressed as decimal values ranging from 0 to 100.

a)True

b)False

9.Which of the following accurately describes a hypothesis test?

a)a descriptive technique that allows researcher to describe a population

b)an inferential technique that uses the data from a sample to draw inferences about a population

c)an inferential technique that uses information about a population to make predictions about a sample.

d)a descriptive technique that allows researchers to describe a sample

10.By selecting a larger alpha level, a researcher is __________________

a)attempting to make it easier to reject H0 (the null hypothesis)

b)better able to detect a treatment effect

c)increasing the risk of a Type I error

d)all of the above