Exam 3: Some Key Ingredients for Inferential Statistics: Z Scores,the Normal Curve, Sample Versus Population, and Probability

The type of sampling that begins with a complete list of all the members of the population is __________ sampling.

The particular set of people enrolled in a study intended to be representative of a larger population is a(n)__________.

In a normal curve,the percentage of the scores between one and two standard deviations above the mean is approximately __________.

The addition rule of probability is also known as the __________ rule.

The raw score that corresponds to a Z score of 2.0 obtained from a distribution with a mean of 80 and a standard deviation of 10 is

Which of the following statements regarding Z scores is FALSE?

A psychologist is most likely to calculate Z scores in order to

If a student who wants to study alcohol use at a high school obtains a complete list of the students and has a blindfolded person select as many people as needed for the study,the student is conducting

The symbol for the standard deviation of a sample is

The interpretation of probability made by students who say there is about a 90% chance they will see a friend who has a class across the hall at the same time on any day is the

The expected relative frequency of a particular outcome is __________.

The number of standard deviations a score is above or below the mean is indicated by a(n)__________.

Molly wants to pursue a graduate degree at New University but is unsure whether to specialize in law or medicine. To help her decide, she takes the MCAT and LSAT exams. LSAT: Molly's score = 120; Students at New University: M = 150, SD = 15 MCAT: Molly's score = 52; Students at New University: M = 40, SD = 6 -In relation to the other people at New University,on which test did Molly get the better score?

A sample's representativeness is

If a sophomore class is 50% women,the junior class is 45% women,and the senior class is 55% women,the probability of drawing a woman who is a junior is said to be

Using a normal curve table,the Z score a person would need to be in the top 4% of his or her class on a particular test is

A Z score also may be called a(n)__________.

The fact that probabilities are proportions means that they

Using a normal curve table,the percentage of scores between a Z score of 1.29 and a Z score of 1.49 is

If the mean score on a stress scale is 5,the standard deviation is 2,and the distribution is normal,what would be the mean value when converted to a Z distribution?