Question 1

What z-score value is associated with the highest 66% of a normal distribution?

Accepted Answer

z = -.41

Question 2

In a normal distribution, what proportion of the population will have a z-score between -.23 and -.84?

Accepted Answer

A)  .1095 
B)  .7085 
C)  .3905 
D)  .2085 
A)  .1095 
B)  .7085 
C)  .3905 
D)  .2085 D

Question 3

For a normal distribution, determine a. p(z > -.23) b. p(z > +2.15) c. p(z < -1.29) d. p(z < +.58)

Accepted Answer

a.p(z > -.23) = .5910 b.p(z > +2.15) = .0158 c.p(z < -1.29) = .0985 d.p(z < +.58) = .7190

Question 4

A normally distributed set of scores has a μ = 25 and σ = 4. What percentage of scores can be expected to score higher than 20?

Accepted Answer

@#LAT-DLM& p(X > 20)

Question 5

In a normal distribution, what is the probability of obtaining z-scores
a. greater than +2.00
b. greater than -1.00
c. less than -.50
d. less than +3.00

Accepted Answer

a.p(z > +2.00) = .02

Question 6

What z-score is associated with the lowest 2.5% of a normal distribution?

Accepted Answer

A)  -.67 
B)  +.67 
C)  -1.96 
D)  +1.96 
A)  -.67 
B)  +.67 
C)  -1.96 
D)  +1.96

Question 7

What column of the normal distribution table would identify the proportions associated with the following z-scores?
a. greater than +1.59 Column _________
b. greater than -2.36 Column __________
c. less than -1.78 Column __________
d. less than +.42 Column __________

Accepted Answer

p(z > +1.59) = Column C
b.p(z

Question 8

For a normally distributed set of scores with a μ = 78 and σ = 9, find
a. p(83 < X < 98)
b. P(62 < X < 88)

Accepted Answer

a. @#LAT-DLM& proportion between mean and +2.22 =

Question 9

Column D of the Normal Distribution Table

Accepted Answer

A)  identifies particular z-score values. 
B)  identifies the proportion in the body of the normal curve. 
C)  identifies the proportion in the tail of the normal curve. 
D)  identifies the proportion between the mean and a particular z-score value. 
A)  identifies particular z-score values. 
B)  identifies the proportion in the body of the normal curve. 
C)  identifies the proportion in the tail of the normal curve. 
D)  identifies the proportion between the mean and a particular z-score value.

Question 10

What z-score value separates the lowest 5% of a normal distribution from the highest 95%?

Accepted Answer

A)  -1.65 
B)  +1.65 
C)  -2.57 
D)  +2.57 
A)  -1.65 
B)  +1.65 
C)  -2.57 
D)  +2.57

Question 11

Column B of the Normal Distribution Table

Accepted Answer

A)  identifies particular z-score values. 
B)  identifies the proportion in the body of the normal curve. 
C)  identifies the proportion in the tail of the normal curve. 
D)  identifies the proportion between the mean and a particular z-score value. 
A)  identifies particular z-score values. 
B)  identifies the proportion in the body of the normal curve. 
C)  identifies the proportion in the tail of the normal curve. 
D)  identifies the proportion between the mean and a particular z-score value.

Question 12

A normally shaped distribution has a μ= 25 and a σ = 3. What raw score separates the upper 13% of the distribution from the lower 87%?

Accepted Answer

A)  21.61 
B)  26.13 
C)  28.39 
D)  23.87 
A)  21.61 
B)  26.13 
C)  28.39 
D)  23.87

Question 13

To say that the tails of the normal distribution are asymptotic means that

Accepted Answer

A)  the left and right sides of the distribution are mirror images of each other. 
B)  the tails never touch the baseline. 
C)  the area under the curve is equal to one. 
D)  proportions are smaller in the tails. 
A)  the left and right sides of the distribution are mirror images of each other. 
B)  the tails never touch the baseline. 
C)  the area under the curve is equal to one. 
D)  proportions are smaller in the tails.

Question 14

In a normal distribution, find the proportion under the curve between the mean and a z-score of
a. +1.00
b. -2.59
c. .42

Accepted Answer

a. .3413
b

Question 15

What proportion of the normal distribution is associated with z-scores greater than -1.50?

Accepted Answer

A)  .9332 
B)  .0668 
C)  .4332 
D)  .3413 
A)  .9332 
B)  .0668 
C)  .4332 
D)  .3413

Question 16

In a normal distribution, what proportion of the population will score between the mean and a z-score of -1.00?

Accepted Answer

A)  .8413 
B)  .1587 
C)  .3413 
D)  .4386 
A)  .8413 
B)  .1587 
C)  .3413 
D)  .4386

Question 17

What z-score is associated with the highest 60% of a normal distribution?

Accepted Answer

A)  -.25 
B)  +.25 
C)  -2.51 
D)  +2.51 
A)  -.25 
B)  +.25 
C)  -2.51 
D)  +2.51

Question 18

For a normal distribution, p(z > +1.78) =

Accepted Answer

A)  .0375 
B)  .9625 
C)  .4625 
D)  .0213 
A)  .0375 
B)  .9625 
C)  .4625 
D)  .0213

Question 19

What is the probability of drawing an ace from a deck of cards?

Accepted Answer

A)  1/52 
B)  2/52 
C)  3/52 
D)  4/52 
A)  1/52 
B)  2/52 
C)  3/52 
D)  4/52

Question 20

For a normally shaped distribution with a μ = 54 and σ = 6, what raw scores are so extreme that they will be achieved by only 11% of the population?

Accepted Answer

5.5% at each end; 5.5 ÷ 100 =

What z-score value is associated with the highest 66% of a normal distribution?

In a normal distribution, what proportion of the population will have a z-score between -.23 and -.84?

For a normal distribution, determine a. p(z > -.23) b. p(z > +2.15) c. p(z < -1.29) d. p(z < +.58)

A normally distributed set of scores has a μ = 25 and σ = 4. What percentage of scores can be expected to score higher than 20?

In a normal distribution, what is the probability of obtaining z-scores a. greater than +2.00 b. greater than -1.00 c. less than -.50 d. less than +3.00

What z-score is associated with the lowest 2.5% of a normal distribution?

What column of the normal distribution table would identify the proportions associated with the following z-scores? a. greater than +1.59 Column _ b. greater than -2.36 Column c. less than -1.78 Column d. less than +.42 Column __

For a normally distributed set of scores with a μ = 78 and σ = 9, find a. p(83 < X < 98) b. P(62 < X < 88)

Column D of the Normal Distribution Table

What z-score value separates the lowest 5% of a normal distribution from the highest 95%?

Column B of the Normal Distribution Table

A normally shaped distribution has a μ= 25 and a σ = 3. What raw score separates the upper 13% of the distribution from the lower 87%?

To say that the tails of the normal distribution are asymptotic means that

In a normal distribution, find the proportion under the curve between the mean and a z-score of a. +1.00 b. -2.59 c. .42

What proportion of the normal distribution is associated with z-scores greater than -1.50?

In a normal distribution, what proportion of the population will score between the mean and a z-score of -1.00?

What z-score is associated with the highest 60% of a normal distribution?

For a normal distribution, p(z > +1.78) =

What is the probability of drawing an ace from a deck of cards?

For a normally shaped distribution with a μ = 54 and σ = 6, what raw scores are so extreme that they will be achieved by only 11% of the population?

Organizing Data Using Tables and Graphs

Measures of Central Tendency

Measures of Variability

Z-Scores and Other Standard Scores

Sampling Distribution of Means

Hypothesis Testing

One-Sample T-Test

Two-Sample T-Test: Independent Samples Design

Two-Sample T-Test: Related Samples Design

Confidence Interval Versus Point Estimation

One-Way Analysis of Variance

Factorial Analysis of Variance

Correlation and Regression

Chi-Square

Introduction to Statistics

Nonparametric Statistics for Ordinal Data

Filters

Exam 6: Probability and the Normal Distribution

What z-score value is associated with the highest 66% of a normal distribution?

In a normal distribution, what proportion of the population will have a z-score between -.23 and -.84?

For a normal distribution, determine a. p(z > -.23) b. p(z > +2.15) c. p(z < -1.29) d. p(z < +.58)

A normally distributed set of scores has a μ = 25 and σ = 4. What percentage of scores can be expected to score higher than 20?

In a normal distribution, what is the probability of obtaining z-scores a. greater than +2.00 b. greater than -1.00 c. less than -.50 d. less than +3.00

What z-score is associated with the lowest 2.5% of a normal distribution?

What column of the normal distribution table would identify the proportions associated with the following z-scores? a. greater than +1.59 Column _________ b. greater than -2.36 Column __________ c. less than -1.78 Column __________ d. less than +.42 Column __________

For a normally distributed set of scores with a μ = 78 and σ = 9, find a. p(83 < X < 98) b. P(62 < X < 88)

Column D of the Normal Distribution Table

What z-score value separates the lowest 5% of a normal distribution from the highest 95%?

Column B of the Normal Distribution Table

A normally shaped distribution has a μ= 25 and a σ = 3. What raw score separates the upper 13% of the distribution from the lower 87%?

To say that the tails of the normal distribution are asymptotic means that

In a normal distribution, find the proportion under the curve between the mean and a z-score of a. +1.00 b. -2.59 c. .42

What proportion of the normal distribution is associated with z-scores greater than -1.50?

In a normal distribution, what proportion of the population will score between the mean and a z-score of -1.00?

What z-score is associated with the highest 60% of a normal distribution?

For a normal distribution, p(z > +1.78) =

What is the probability of drawing an ace from a deck of cards?

For a normally shaped distribution with a μ = 54 and σ = 6, what raw scores are so extreme that they will be achieved by only 11% of the population?

Organizing Data Using Tables and Graphs

Measures of Central Tendency

Measures of Variability

Z-Scores and Other Standard Scores

Sampling Distribution of Means

Hypothesis Testing

One-Sample T-Test

Two-Sample T-Test: Independent Samples Design

Two-Sample T-Test: Related Samples Design

Confidence Interval Versus Point Estimation

One-Way Analysis of Variance

Factorial Analysis of Variance

Correlation and Regression

Chi-Square

Introduction to Statistics

Nonparametric Statistics for Ordinal Data

Filters

What column of the normal distribution table would identify the proportions associated with the following z-scores? a. greater than +1.59 Column _ b. greater than -2.36 Column c. less than -1.78 Column d. less than +.42 Column __