1. Which of the following z-scores is located furthest AND belowthe mean of a distribution?
a.z = -3.0
b.z = -1.0
c.z = +1.0
d.z = +3.0
2. All of the following apply to the concept of variabilityEXCEPT:
a.it is a form of inferential statistics
b.it is a form of descriptive statistics
c.it measures the extent to which scores deviate from themean
d.it measures distance/spread of scores in a distribution
3. Which statement best describes the concept of a z-score?
a.they standardize a distribution, but do not provide anyinformation about location
b.they standardize a distribution and allow for comparisonsbetween different distributions
c.they standardize a distribution and are always equal to rawscores
d.they do not standardize a distribution, but do provideinformation about location
4.What does the Unit Normal Table tell you about adistribution?
a.the standardized proportions of a normal distributioncorresponding to raw scores
b.the standardized proportions of a skewed distributioncorresponding to raw scores
c.the standardized proportions of a normal distributioncorresponding to z-scores
d.the standardized proportions of a skewed distributioncorresponding to z-scores
5.With respect to probability and sampling:
a.each individual in a population should have an equal chance ofbeing selected for a sample
b.sampling should occur with replacement
c.both answers a and b
d.none of the above
27. Chapter 7: Question 27
Which statement best defines the concept of the distribution ofsample means?
a.it is a distribution of all the possible means of a specified(n) taken from a population
b.it is a distribution of sample statistics (a samplingdistribution)
c.it is a distribution of all the possible raw scores taken froma population
d.both answers a and b
29. Chapter 7: Question 29
All of the following are characteristics of a distribution ofsample means EXCEPT:
a.sample means should occur mostly near this distribution'smean
b.with larger n's, this distribution becomes more variable
c.with smaller n's, this distribution becomes more variable
d.all of the above
31.) Hypothesis testing is a form of _________, which uses_________ data to evaluate a hypothesis about a _________.
a. descriptive statistics; population; sample
b. inferential statistics; population; sample
c. inferential statistics; sample; population
d. descriptive statistics; sample; population
33.Which of the following is true about the concept ofstatistical power?
a.it is a useless piece of information with respect tohypothesis testing
b.it is the probability that a hypothesis test will erroneouslyreject a true null hypothesis
c.it is the probability that a hypothesis test will correctlyreject a false null hypothesis
d.it is also known as Type I Error (?)
35.) Which of the following does NOT apply toType II Errors?
a. Type II Error influences the power of a hypothesis test
b. they occur when a researcher fails to reject a false nullhypothesis
c. the probability of a Type II Error is known as beta (?)
d. all of the above apply
36. Chapter 9: Question 36
Under which conditions will it be very difficult to detect atreatment effect using the t-statistic?
a.with a small sample size and low sample variance
b.with a small sample size and high sample variance
c.with a large sample size and high sample variance
d.with a large sample size and low sample variance
37. Chapter 9: Question 37
All of the following are assumptions of the one-sample t-testEXCEPT:
a.scores come from independent observations
b.the population that is sampled is skewed
c.the population that is sampled is normal
d.none of the above (all of the above are assumptions)
39. Chapter 9: Question 39
What is the term for the estimated standard distance between asample mean (M) and the population mean (u)?
a.estimated standard variance
b.estimated standard deviation
c.estimated standard error
d.estimated standard treatment effect
