Question 1

A vaccine is 95 percent effective.What is the probability that it is not effective for: One and only one individual out of 20 individuals?

Accepted Answer

A) .0179 
B) .3585 
C) .0189 
D) .3774 
A) .0179 
B) .3585 
C) .0189 
D) .3774

Question 2

If x is a binomial random variable,then the standard deviation of x is given by

Accepted Answer

A) np 
B) (npq)2 
C) $ \sqrt{npq}$ 
D) npq 
A) np 
B) (npq)2 
C) $ \sqrt{npq}$ 
D) npq

Question 3

For a binomial process,the probability of success is 40% and the number of trials is 5. Find the variance.

Accepted Answer

A) 5.0 
B) 1.2 
C) 2.0 
D) 1.1 
A) 5.0 
B) 1.2 
C) 2.0 
D) 1.1

Question 4

Historical data for a local steel manufacturing company shows that the average number of defects per standard sheet of steel is 2.In addition,the number of defects per unit is distributed according to Poisson distribution. What is the probability that there will be a total of 7 defects on four standard sheets of steel?

Accepted Answer

A) .8750 
B) .1221 
C) .0573 
D) .1396 
A) .8750 
B) .1221 
C) .0573 
D) .1396

Question 5

A vaccine is 95 percent effective.What is the probability that it is not effective for: More than one out of 20 individuals?

Accepted Answer

A) .7359 
B) .3585 
C) .2641 
D) .3774 
A) .7359 
B) .3585 
C) .2641 
D) .3774

Question 6

If the number of surface nonconformities on a specific size of a metal piece is the discrete random variable in question,then the appropriate probability distribution that can describe the probability of a specific size metal sheet containing 3 nonconformities is most likely given by the binomial distribution.

Accepted Answer

A) True 
 B)False

Question 7

In a study conducted by UCLA,it was found that 25% of college freshmen support increased military spending.If 6 college freshmen are randomly selected,find the probability that: Exactly 3 support increased military spending

Accepted Answer

A) .0330 
B) .1318 
C) .7844 
D) .9624 
A) .0330 
B) .1318 
C) .7844 
D) .9624

Question 8

According to data from the state blood program,40% of all individuals have group A blood.If six (6)individuals give blood,find the probability None of the individuals has group A blood?

Accepted Answer

A) .0041 
B) .0410 
C) .4000 
D) .0467 
A) .0041 
B) .0410 
C) .4000 
D) .0467

A vaccine is 95 percent effective.What is the probability that it is not effective for: One and only one individual out of 20 individuals?

If x is a binomial random variable,then the standard deviation of x is given by

For a binomial process,the probability of success is 40% and the number of trials is 5. Find the variance.

A vaccine is 95 percent effective.What is the probability that it is not effective for: More than one out of 20 individuals?

In a study conducted by UCLA,it was found that 25% of college freshmen support increased military spending.If 6 college freshmen are randomly selected,find the probability that: Exactly 3 support increased military spending

According to data from the state blood program,40% of all individuals have group A blood.If six (6)individuals give blood,find the probability None of the individuals has group A blood?

An Introduction to Business Statistics

Descriptive Statistics: Tabular and Graphical Methods

Descriptive Statistics: Numerical Methods

Probability

Continuous Random Variables

Sampling and Sampling Distributions

Confidence Intervals

Hypothesis Testing

Statistical Inferences Based on Two Samples

Experimental Design and Analysis of Variance

Chi-Square Tests

Simple Linear Regression Analysis

Multiple Regression

Model Building and Model Diagnostics

Time Series Forecasting

Process Improvement Using Control Charts

Nonparametric Methods

Decision Theory

Filters

Exam 5: Discrete Random Variables

A vaccine is 95 percent effective.What is the probability that it is not effective for: One and only one individual out of 20 individuals?

If x is a binomial random variable,then the standard deviation of x is given by

For a binomial process,the probability of success is 40% and the number of trials is 5. Find the variance.

A vaccine is 95 percent effective.What is the probability that it is not effective for: More than one out of 20 individuals?

In a study conducted by UCLA,it was found that 25% of college freshmen support increased military spending.If 6 college freshmen are randomly selected,find the probability that: Exactly 3 support increased military spending

According to data from the state blood program,40% of all individuals have group A blood.If six (6)individuals give blood,find the probability None of the individuals has group A blood?

An Introduction to Business Statistics

Descriptive Statistics: Tabular and Graphical Methods

Descriptive Statistics: Numerical Methods

Probability

Continuous Random Variables

Sampling and Sampling Distributions

Confidence Intervals

Hypothesis Testing

Statistical Inferences Based on Two Samples

Experimental Design and Analysis of Variance

Chi-Square Tests

Simple Linear Regression Analysis

Multiple Regression

Model Building and Model Diagnostics

Time Series Forecasting

Process Improvement Using Control Charts

Nonparametric Methods

Decision Theory

Filters