Question 1

What proportion of the normal distribution is associated with z-scores less than -2.50?

Accepted Answer

A)  .0062 
B)  .9938 
C)  .4938 
D)  .0668 
A)  .0062 
B)  .9938 
C)  .4938 
D)  .0668

Question 2

To find the z-score value associated with the lowest 60% of the normal distribution, first translate the 60% into a proportion, then look in _____________ of the normal distribution table before looking for the associated z-score.

Accepted Answer

A)  column A 
B)  column B 
C)  column C 
D)  column D 
A)  column A 
B)  column B 
C)  column C 
D)  column D

Question 3

To find the z-score value is associated with the lowest 20% of the normal distribution, first

Accepted Answer

A)  look in column D of the normal distribution table. 
B)  translate the 20% into a proportion. 
C)  look in column B of the normal distribution table. 
D)  look in column A of the normal distribution table. 
A)  look in column D of the normal distribution table. 
B)  translate the 20% into a proportion. 
C)  look in column B of the normal distribution table. 
D)  look in column A of the normal distribution table.

Question 4

Given a normally shaped distribution with a μ = 80 and a σ = 8, what scores are so extreme that they are achieved by only 2% of the population?

Accepted Answer

A)  63.52 and 96.48 
B)  61.36 and 98.64 
C)  55.36 and 104.64 
D)  56.96 and 103.04 
A)  63.52 and 96.48 
B)  61.36 and 98.64 
C)  55.36 and 104.64 
D)  56.96 and 103.04

Question 5

A normally distributed set of scores has a μ = 69 and σ = 6. What is the probability of obtaining a score less than 72?

Accepted Answer

The answer of A normally distributed set of scores has...

Question 6

What z-score value separates the lowest 70% of a normal distribution from the upper 30%?

Accepted Answer

The answer of What z-score value separates the lowest 70%...

Question 7

If we are looking for the proportion of the population that scored between two raw scores, we would first have to

Accepted Answer

A)  translate the raw scores into proportions. 
B)  look for the proportion in column D of the normal distribution table. 
C)  convert both raw scores into z-scores. 
D)  look up the proportion associated with both raw scores in column D and add them together. 
A)  translate the raw scores into proportions. 
B)  look for the proportion in column D of the normal distribution table. 
C)  convert both raw scores into z-scores. 
D)  look up the proportion associated with both raw scores in column D and add them together.

Question 8

What z-score value is associated with the lowest 18% of a normal distribution?

Accepted Answer

The answer of What z-score value is associated with the...

Question 9

For a normally distributed set of scores with a μ = 30 and σ = 3, what raw score separates the lower 15% of the distribution from the upper 85%?

Accepted Answer

z-score =

Question 10

A normally distributed set of scores has a μ = 86 and σ = 8. What proportion of scores will be between
a. 82 and 96?
b. 75 and 80?

Accepted Answer

a. @#LAT-DLM& proportion between mean and -.50 = .

Question 11

For a normally distributed set of scores with a μ = 47 and σ = 5, what raw score separates the upper 13% of the distribution from the lower 87%?

Accepted Answer

z-score =

Question 12

A normally distributed set of scores has a μ = 92 and a σ = 10. What is the probability that a randomly selected score will fall between 72 and 82?

Accepted Answer

A)  .8413 
B)  .8185 
C)  .3413 
D)  .1359 
A)  .8413 
B)  .8185 
C)  .3413 
D)  .1359

Question 13

If we are looking for the probability that a score will fall between 72 and 92, the correct notation would be

Accepted Answer

A) p(72 X X > 92). D) p(< 72 X < 92). A) p(72 X X > 92). D) p(< 72 X < 92).

Question 14

If we are interested in knowing the proportion of the normal distribution that is associated with two scores that are both located on one side of the mean, then we would

Accepted Answer

A)  add the two proportions together. 
B)  subtract the smaller proportion from the larger one. 
C)  subtract the larger proportion from the smaller one. 
D)  multiply the values of the two proportions together. 
A)  add the two proportions together. 
B)  subtract the smaller proportion from the larger one. 
C)  subtract the larger proportion from the smaller one. 
D)  multiply the values of the two proportions together.

Question 15

In a normal distribution, what proportion of the population will have a z-score between -1.23 and +1.23?

Accepted Answer

A)  .7198 
B)  .7814 
C)  .5000 
D)  .6297 
A)  .7198 
B)  .7814 
C)  .5000 
D)  .6297

Question 16

If we wanted to determine what raw score is associated with a given z-score, we would use the following formula

Accepted Answer

A)  X = μ - z(σ) 
B)  X = σ + z(μ) 
C)  X = z + μ(σ) 
D)  X = μ + z(σ) 
A)  X = μ - z(σ) 
B)  X = σ + z(μ) 
C)  X = z + μ(σ) 
D)  X = μ + z(σ)

Question 17

What z-score is associated with the lowest 15% of the normal distribution?

Accepted Answer

A)  +2.97 
B)  -2.97 
C)  +1.04 
D)  -1.04 
A)  +2.97 
B)  -2.97 
C)  +1.04 
D)  -1.04

Question 18

To convert a percentage into a proportion,

Accepted Answer

A)  divide by 100. 
B)  multiply by 100. 
C)  divide the percentage by the probability. 
D)  divide the probability by the percentage. 
A)  divide by 100. 
B)  multiply by 100. 
C)  divide the percentage by the probability. 
D)  divide the probability by the percentage.

What proportion of the normal distribution is associated with z-scores less than -2.50?

To find the z-score value associated with the lowest 60% of the normal distribution, first translate the 60% into a proportion, then look in _____________ of the normal distribution table before looking for the associated z-score.

To find the z-score value is associated with the lowest 20% of the normal distribution, first

Given a normally shaped distribution with a μ = 80 and a σ = 8, what scores are so extreme that they are achieved by only 2% of the population?

A normally distributed set of scores has a μ = 69 and σ = 6. What is the probability of obtaining a score less than 72?

What z-score value separates the lowest 70% of a normal distribution from the upper 30%?

If we are looking for the proportion of the population that scored between two raw scores, we would first have to

What z-score value is associated with the lowest 18% of a normal distribution?

For a normally distributed set of scores with a μ = 30 and σ = 3, what raw score separates the lower 15% of the distribution from the upper 85%?

A normally distributed set of scores has a μ = 86 and σ = 8. What proportion of scores will be between a. 82 and 96? b. 75 and 80?

For a normally distributed set of scores with a μ = 47 and σ = 5, what raw score separates the upper 13% of the distribution from the lower 87%?

A normally distributed set of scores has a μ = 92 and a σ = 10. What is the probability that a randomly selected score will fall between 72 and 82?

If we are looking for the probability that a score will fall between 72 and 92, the correct notation would be

If we are interested in knowing the proportion of the normal distribution that is associated with two scores that are both located on one side of the mean, then we would

In a normal distribution, what proportion of the population will have a z-score between -1.23 and +1.23?

If we wanted to determine what raw score is associated with a given z-score, we would use the following formula

What z-score is associated with the lowest 15% of the normal distribution?

To convert a percentage into a proportion,

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

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Exam 6: Probability and the Normal Distribution

What proportion of the normal distribution is associated with z-scores less than -2.50?

To find the z-score value associated with the lowest 60% of the normal distribution, first translate the 60% into a proportion, then look in _____________ of the normal distribution table before looking for the associated z-score.

To find the z-score value is associated with the lowest 20% of the normal distribution, first

Given a normally shaped distribution with a μ = 80 and a σ = 8, what scores are so extreme that they are achieved by only 2% of the population?

A normally distributed set of scores has a μ = 69 and σ = 6. What is the probability of obtaining a score less than 72?

What z-score value separates the lowest 70% of a normal distribution from the upper 30%?

If we are looking for the proportion of the population that scored between two raw scores, we would first have to

What z-score value is associated with the lowest 18% of a normal distribution?

For a normally distributed set of scores with a μ = 30 and σ = 3, what raw score separates the lower 15% of the distribution from the upper 85%?

A normally distributed set of scores has a μ = 86 and σ = 8. What proportion of scores will be between a. 82 and 96? b. 75 and 80?

For a normally distributed set of scores with a μ = 47 and σ = 5, what raw score separates the upper 13% of the distribution from the lower 87%?

A normally distributed set of scores has a μ = 92 and a σ = 10. What is the probability that a randomly selected score will fall between 72 and 82?

If we are looking for the probability that a score will fall between 72 and 92, the correct notation would be

If we are interested in knowing the proportion of the normal distribution that is associated with two scores that are both located on one side of the mean, then we would

In a normal distribution, what proportion of the population will have a z-score between -1.23 and +1.23?

If we wanted to determine what raw score is associated with a given z-score, we would use the following formula

What z-score is associated with the lowest 15% of the normal distribution?

To convert a percentage into a proportion,

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