Question 1

If the probability of drawing a member of a population is not equal for all members, then the sample is said to be _________.

Accepted Answer

A)  random 
B)  independent 
C)  exhaustive 
D)  biased 
A)  random 
B)  independent 
C)  exhaustive 
D)  biased

Question 2

Define the addition and multiplication rules. Give an example of each.

Accepted Answer

Addition and multiplication are two fund

Question 3

Which of the following are examples of mutually exclusive events?

Accepted Answer

A)  rain and a cloudless sky 
B)  snow and a temperature of 10 ° Celsius 
C)  walking and running at the same time 
D)  all of these 
A)  rain and a cloudless sky 
B)  snow and a temperature of 10 ° Celsius 
C)  walking and running at the same time 
D)  all of these

Question 4

If two events are mutually exclusive and exhaustive, P + Q = 1.

Accepted Answer

A) True 
 B)False

Question 5

If p ( A and B ) = 0, then A and B must be _________.

Accepted Answer

A)  independent 
B)  mutually exclusive 
C)  exhaustive 
D)  unbiased 
A)  independent 
B)  mutually exclusive 
C)  exhaustive 
D)  unbiased

Question 6

The probability of throwing two ones with a pair of dice equals _________.

Accepted Answer

A)  0.3600 
B)  0.1667 
C)  0.0278 
D)  0.3333 
A)  0.3600 
B)  0.1667 
C)  0.0278 
D)  0.3333

Question 7

A set of events is exhaustive if _________.

Accepted Answer

A)  the sum of their probabilities equals one 
B)  the set includes all of the possible events 
C)  they are mutually exclusive 
D)  they are independent 
A)  the sum of their probabilities equals one 
B)  the set includes all of the possible events 
C)  they are mutually exclusive 
D)  they are independent

Question 8

If an event is certain to occur, its probability of occurrence equals 1.00.

Accepted Answer

A) True 
 B)False

Question 9

In an experiment on parapsychology a scientist wants to investigate how well a subject can correctly guess what symbol the experimenter is thinking of. The experimenter chooses from 4 different possible symbols. To avoid bias the experimenter uses a random number table to select a symbol to concentrate on for each trial. Assuming the experiment is not biased what are the probabilities for the following outcomes if chance alone is operating?

Accepted Answer

The answer of In an experiment on parapsychology a scientist...

Question 10

At the local racetrack 10 races are run each day with 10 different horses in each race. You bet on a horse in each race but select the horse by using a random number table.

Accepted Answer

The answer of At the local racetrack 10 races are...

Question 11

When a variable is continuous, p ( A ) equals the area under the curve corresponding to A divided by the total area under the curve.

Accepted Answer

A) True 
 B)False

Question 12

If a town of 7000 people has 4000 females in it, then the probability of randomly selecting 6 females in six draws (with replacement) equals _________.

Accepted Answer

A)  0.0348 
B)  0.0571 
C)  0.5714 
D)  0.3429 
A)  0.0348 
B)  0.0571 
C)  0.5714 
D)  0.3429

Question 13

The probability of drawing an ace followed by a king (without replacement) equals _________.

Accepted Answer

A)  0.0044 
B)  0.0060 
C)  0.0045 
D)  0.0965 
A)  0.0044 
B)  0.0060 
C)  0.0045 
D)  0.0965

Question 14

The Addition Rule states _________.

Accepted Answer

A)  p ( A or B ) = p ( A ) + p ( B ) - p ( A and B ) 
B)  p( A and B ) = p ( A ) p ( B | A ) 
C)  P + Q = 1 
D)  p ( A ) p ( B | A ) = p ( A ) p (
B)  
A)  p ( A or B ) = p ( A ) + p ( B ) - p ( A and B ) 
B)  p( A and B ) = p ( A ) p ( B | A ) 
C)  P + Q = 1 
D)  p ( A ) p ( B | A ) = p ( A ) p (
B)

Question 15

A certain university maintains a colony of male mice for research purposes. The ages of the mice are normally distributed with a mean of 60 days and a standard deviation of 5.2. Assume you randomly sample one mouse from the colony. The probability his age will be less than 45 days is _________.

Accepted Answer

A)  0.9980 
B)  0.4980 
C)  0.0020 
D)  0.0019 
A)  0.9980 
B)  0.4980 
C)  0.0020 
D)  0.0019

Question 16

When two events are mutually exclusive then p ( A and B ) must equal 1.00.

Accepted Answer

A) True 
 B)False

Question 17

Probability values range from - 1.00 to +1.00.

Accepted Answer

A) True 
 B)False

Question 18

If the odds in favor of an event occurring are 9 to 1, the probability of the event occurring is _________.

Accepted Answer

A)  9 
B)  1/9 
C)  9/10 
D)  8/9 
A)  9 
B)  1/9 
C)  9/10 
D)  8/9

Question 19

Define addition rule.

Accepted Answer

The addition rule, also known as the sum

Question 20

To use probability and inference, data must be discrete.

Accepted Answer

A) True 
 B)False

If the probability of drawing a member of a population is not equal for all members, then the sample is said to be _________.

Define the addition and multiplication rules. Give an example of each.

Which of the following are examples of mutually exclusive events?

If two events are mutually exclusive and exhaustive, P + Q = 1.

If p ( A and B ) = 0, then A and B must be _________.

The probability of throwing two ones with a pair of dice equals _________.

A set of events is exhaustive if _________.

If an event is certain to occur, its probability of occurrence equals 1.00.

At the local racetrack 10 races are run each day with 10 different horses in each race. You bet on a horse in each race but select the horse by using a random number table.

When a variable is continuous, p ( A ) equals the area under the curve corresponding to A divided by the total area under the curve.

If a town of 7000 people has 4000 females in it, then the probability of randomly selecting 6 females in six draws (with replacement) equals _________.

The probability of drawing an ace followed by a king (without replacement) equals _________.

The Addition Rule states _________.

A certain university maintains a colony of male mice for research purposes. The ages of the mice are normally distributed with a mean of 60 days and a standard deviation of 5.2. Assume you randomly sample one mouse from the colony. The probability his age will be less than 45 days is _________.

When two events are mutually exclusive then p ( A and B ) must equal 1.00.

Probability values range from - 1.00 to +1.00.

If the odds in favor of an event occurring are 9 to 1, the probability of the event occurring is _________.

Define addition rule.

To use probability and inference, data must be discrete.

Statistics and Scientific Method

Basic Mathematical and Measurement Concepts

Frequency Distributions

Measures of Central Tendency and Variability

The Normal Curve and Standard Scores

Correlation

Linear Regression

Binomial Distribution

Introduction to Hypothesis Testing: Using the Sign Test

Power

Sampling Distributions, Sampling Distribution of the Mean: the Normal Deviate Z Test

Students T Test for Single Samples

Students T Test for Correlated and Independent Groups

Introduction to the Analysis of Variance

Introduction to the Two-Way Analysis of Variance

Chi-Square and Other Nonparametric Tests

Filters

Exam 8: Random Sampling and Probability

If the probability of drawing a member of a population is not equal for all members, then the sample is said to be _________.

Define the addition and multiplication rules. Give an example of each.

Which of the following are examples of mutually exclusive events?

If two events are mutually exclusive and exhaustive, P + Q = 1.

If p ( A and B ) = 0, then A and B must be _________.

The probability of throwing two ones with a pair of dice equals _________.

A set of events is exhaustive if _________.

If an event is certain to occur, its probability of occurrence equals 1.00.

At the local racetrack 10 races are run each day with 10 different horses in each race. You bet on a horse in each race but select the horse by using a random number table.

When a variable is continuous, p ( A ) equals the area under the curve corresponding to A divided by the total area under the curve.

If a town of 7000 people has 4000 females in it, then the probability of randomly selecting 6 females in six draws (with replacement) equals _________.

The probability of drawing an ace followed by a king (without replacement) equals _________.

The Addition Rule states _________.

A certain university maintains a colony of male mice for research purposes. The ages of the mice are normally distributed with a mean of 60 days and a standard deviation of 5.2. Assume you randomly sample one mouse from the colony. The probability his age will be less than 45 days is _________.

When two events are mutually exclusive then p ( A and B ) must equal 1.00.

Probability values range from - 1.00 to +1.00.

If the odds in favor of an event occurring are 9 to 1, the probability of the event occurring is _________.

Define addition rule.

To use probability and inference, data must be discrete.

Statistics and Scientific Method

Basic Mathematical and Measurement Concepts

Frequency Distributions

Measures of Central Tendency and Variability

The Normal Curve and Standard Scores

Correlation

Linear Regression

Binomial Distribution

Introduction to Hypothesis Testing: Using the Sign Test

Power

Sampling Distributions, Sampling Distribution of the Mean: the Normal Deviate Z Test

Students T Test for Single Samples

Students T Test for Correlated and Independent Groups

Introduction to the Analysis of Variance

Introduction to the Two-Way Analysis of Variance

Chi-Square and Other Nonparametric Tests

Filters