Deck 4: Standard Scores, the Z Distribution, and Hypothesis Testing

Question 1

What proportion of scores on a z distribution falls between a z score of 0.00 and a z score of 1.00?

A).2500
B).3000
C).3413
D).5000

Answer 1

.3413

Question 2

According to the z distribution, what proportion of SAT verbal scores falls between 400 and 600?

A).3413
B).2500
C).6826
D)-.3413

Answer 2

.6826

Question 3

What essential properties are necessary to make a score a standard score?

A)mean and standard deviation
B)median and standard deviation
C)a normative sample of at least 30 participants
D)standard deviation and variance

Answer 3

median and standard deviation

Question 4

What proportion of scores on a z distribution falls between a z score of -1.00 and a z score of 1.00?

A).3413
B).6826
C).7500
D).9500

Question 5

Which of the following T scores has a z score of 0.00?

A)10
B)20
C)30
D)40
E)50

Question 6

What z score cuts off the upper 50% of the z distribution?

A)0.00
B)1.96
C)-1.00
D)-1.96

Question 7

On the Karen Horney-Coolidge Tridimensional Inventory (note: Karen Horney was a neo-Freudian), a student receives a raw score of 9 on the Compliance Dimension and a raw score of 12 on the Malevolence facet of Aggression.The student

A)was more malevolent than compliant
B)scored higher on the Malevolence facet than on the Compliance dimension
C)scored nearly equally on the two measures given the possibility of chance
D)it cannot be determined

Question 8

For a person with an SAT quantitative score of 600, his or her z score would be

A)-1.00
B)0.00
C)1.00
D)2.00

Question 9

For a person with an IQ of 145, according to the z distribution, his or her score would be in the _________ percentile.

A)99th (or 100th)
B)95th
C)90th
D)145th

Question 10

To create a single standard score, one must take any number in a set of numbers and ___________ the mean of the set of numbers and ___________ by the standard deviation of those numbers.

A)add; divide
B)subtract; add
C)subtract; divide
D)add; multiply

Question 11

For the previous set of scores, which score is at the 50th percentile?

A)10
B)20
C)30
D)40
E)50

Question 12

What proportion of scores on a z distribution falls between a z score of -1.00 and a z score of 0.00?

A)-.2500
B).2500
C)-.3413
D).3413

Question 13

For a person with an SAT verbal score of 500, his or her score would be in the __________ percentile.

A)25th
B)50th
C)75th
D)100th

Question 14

For a person with an IQ of 145, his or her score would be _________ standard deviations above the normative mean.

A)1
B)2
C)3
D)4

Question 15

What proportion of scores on a z distribution falls between a z score of -1.96 and 1.96?

A).3413
B).6826
C).7500
D).9500

Question 16

According to the z distribution, what proportion of SAT verbal scores falls between 400 and 500?

A).3413
B).2500
C).6826
D)-.3413

Question 17

What z score cuts off the upper .0250 of the z distribution?

A)0.00
B)1.96
C)-1.00
D)-1.96

Question 18

According to the z distribution, what proportion of SAT verbal scores falls between 500 and 600?

A).3413
B).2500
C).5000
D).7500

Question 19

Which of the following is not a standard score?

A)SAT
B)GRE
C)IQ
D)all of the above are standard scores

Question 20

A T score has a mean and standard deviation of

A)100 and 15
B)50 and 10
C)25 and 5
D)500 and 100

Question 21

From what negative z score to what positive z score would cut off the middle .6826 of the z distribution?

A)± 1.64
B)± 1.96
C)± 2.00
D)± 1.00

Question 22

From what negative z score to what positive z score would cut off the middle .9500 of the z distribution?

A)± 1.64
B)± 1.96
C)± 2.00
D)± 1.00

Question 23

What SAT verbal score would convert to a z score of 2.00?

A)400
B)500
C)600
D)700

Question 24

What proportion of scores on the z distribution would fall between a z of -1.00 and a z of 1.96?

A).3413
B).4750
C).8163
D).1683

Question 25

According to the z distribution, what proportion of SAT verbal scores would fall between 400 and 696?

A).3413
B).4750
C).8163
D).1683