Question 1

The probability of a success in a binomial experiment is denoted by ____________________.

Accepted Answer

The answer of The probability of a success in a...

Question 2

Gym Visits Let X represent the number of times a student visits a gym in a one month period. Assume that the probability distribution of X is as follows:   {Gym Visits Narrative} What is the probability that the student visits the gym at least once in a month?

Accepted Answer

P (1)+ P (

Question 3

In a Poisson experiment, the probability of a success in an interval is ____________________ to the size of the interval.

Accepted Answer

The answer of In a Poisson experiment, the probability of...

Question 4

Online Bankers An official from the securities commission estimates that 75% of all online bankers have profited from the use of insider information. Assume that 15 online bankers are selected at random from the commission's registry. {Online Bankers Narrative} Find the probability that at most 10 have profited from insider information.

Accepted Answer

The answer of Online Bankers An official from the securities...

Question 5

If n = 20 and p = 0.70, then the standard deviation of the binomial distribution is

Accepted Answer

A) 0.14 
B) 2.05 
C) 14.0 
D) 14.7 
A) 0.14 
B) 2.05 
C) 14.0 
D) 14.7

Question 6

Online Bankers An official from the securities commission estimates that 75% of all online bankers have profited from the use of insider information. Assume that 15 online bankers are selected at random from the commission's registry. {Online Bankers Narrative} Find the probability that at least 6 have profited from insider information.

Accepted Answer

The answer of Online Bankers An official from the securities...

Question 7

If X has a binomial distribution with n = 4 and p = 0.3, find the probability that X is at most one.

Accepted Answer

The answer of If X has a binomial distribution with...

Question 8

The Poisson random variable is a:

Accepted Answer

A) discrete random variable with infinitely many possible values. 
B) discrete random variable with finite number of possible values. 
C) continuous random variable with infinitely many possible values. 
D) continuous random variable with finite number of possible values. 
A) discrete random variable with infinitely many possible values. 
B) discrete random variable with finite number of possible values. 
C) continuous random variable with infinitely many possible values. 
D) continuous random variable with finite number of possible values.

Question 9

Which of the following cannot have a Poisson distribution?

Accepted Answer

A) The length of a movie. 
B) The number of telephone calls received by a switchboard in a specified time period. 
C) The number of customers arriving at a gas station in Christmas day. 
D) The number of bacteria found in a cubic yard of soil. 
A) The length of a movie. 
B) The number of telephone calls received by a switchboard in a specified time period. 
C) The number of customers arriving at a gas station in Christmas day. 
D) The number of bacteria found in a cubic yard of soil.

Question 10

Let X be a binomial random variable with n = 25 and p = 0.01. 
 a. Use the binomial table to find P ( X = 0), P ( X = 1), and P ( X = 2). 
 b. Find the variance and standard deviation of X .

Accepted Answer

The answer of Let X be a binomial random variable...

Question 11

Evaluate the following binomial coefficients. 
 a.   
 b.   
 c.   
 d.

Accepted Answer

a. 15 
 b.

Question 12

Retries The following table contains the probability distribution for X = the number of retries necessary to successfully transmit a 1024K data package through a double satellite media.   {Retries Narrative} What is the standard deviation of the number of retries?

Accepted Answer

The answer of Retries The following table contains the probability...

Question 13

A lab at the DeBakey Institute orders 150 rats a week for each of the 52 weeks in the year for experiments that the lab conducts. Suppose the mean cost of rats used in lab experiments turned out to be $20.00 per week. Interpret this value.

Accepted Answer

A) Most of the weeks resulted in rat costs of $20.00 
B) The median cost for the distribution of rat costs is $20.00 
C) The expected or average costs for all weekly rat purchases is $20.00 
D) The rat cost that occurs more often than any other is $20.00 
A) Most of the weeks resulted in rat costs of $20.00 
B) The median cost for the distribution of rat costs is $20.00 
C) The expected or average costs for all weekly rat purchases is $20.00 
D) The rat cost that occurs more often than any other is $20.00

Question 14

Sports Fans Suppose that past history shows that 5% of college students are sports fans. A sample of 10 students is to be selected. {Sports Fans Narrative} Find the probability that more than 1 student is a sports fan.

Accepted Answer

The answer of Sports Fans Suppose that past history shows...

The probability of a success in a binomial experiment is denoted by ____________________.

Gym Visits Let X represent the number of times a student visits a gym in a one month period. Assume that the probability distribution of X is as follows: {Gym Visits Narrative} What is the probability that the student visits the gym at least once in a month?

In a Poisson experiment, the probability of a success in an interval is ____________________ to the size of the interval.

If n = 20 and p = 0.70, then the standard deviation of the binomial distribution is

If X has a binomial distribution with n = 4 and p = 0.3, find the probability that X is at most one.

The Poisson random variable is a:

Which of the following cannot have a Poisson distribution?

Let X be a binomial random variable with n = 25 and p = 0.01. a. Use the binomial table to find P ( X = 0), P ( X = 1), and P ( X = 2). b. Find the variance and standard deviation of X .

Evaluate the following binomial coefficients. a. b. c. d.

Retries The following table contains the probability distribution for X = the number of retries necessary to successfully transmit a 1024K data package through a double satellite media. {Retries Narrative} What is the standard deviation of the number of retries?

A lab at the DeBakey Institute orders 150 rats a week for each of the 52 weeks in the year for experiments that the lab conducts. Suppose the mean cost of rats used in lab experiments turned out to be $20.00 per week. Interpret this value.

Sports Fans Suppose that past history shows that 5% of college students are sports fans. A sample of 10 students is to be selected. {Sports Fans Narrative} Find the probability that more than 1 student is a sports fan.

What Is Statistics

Graphical and Tabular Descriptive Techniques

Numerical Descriptive Techniques

Data Collection and Sampling

Probability

Continuous Probability Distributions

Sampling Distributions

Introduction to Estimation

Introduction to Hypothesis Testing

Inference About a Population

Inference About Comparing Two Populat

Inference About Comparing Two Populat

Analysis of Variance

Chi-Squared Tests

Simple Linear Regression and Correlat

Multiple Regression

Review of Statistical Inference

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Exam 6: Random Variables and Discrete Probability Distributions

The probability of a success in a binomial experiment is denoted by ____________________.

Gym Visits Let X represent the number of times a student visits a gym in a one month period. Assume that the probability distribution of X is as follows: {Gym Visits Narrative} What is the probability that the student visits the gym at least once in a month?

In a Poisson experiment, the probability of a success in an interval is ____________________ to the size of the interval.

If n = 20 and p = 0.70, then the standard deviation of the binomial distribution is

If X has a binomial distribution with n = 4 and p = 0.3, find the probability that X is at most one.

The Poisson random variable is a:

Which of the following cannot have a Poisson distribution?

Let X be a binomial random variable with n = 25 and p = 0.01. a. Use the binomial table to find P ( X = 0), P ( X = 1), and P ( X = 2). b. Find the variance and standard deviation of X .

Evaluate the following binomial coefficients. a. b. c. d.

Retries The following table contains the probability distribution for X = the number of retries necessary to successfully transmit a 1024K data package through a double satellite media. {Retries Narrative} What is the standard deviation of the number of retries?

A lab at the DeBakey Institute orders 150 rats a week for each of the 52 weeks in the year for experiments that the lab conducts. Suppose the mean cost of rats used in lab experiments turned out to be $20.00 per week. Interpret this value.

Sports Fans Suppose that past history shows that 5% of college students are sports fans. A sample of 10 students is to be selected. {Sports Fans Narrative} Find the probability that more than 1 student is a sports fan.

What Is Statistics

Graphical and Tabular Descriptive Techniques

Numerical Descriptive Techniques

Data Collection and Sampling

Probability

Continuous Probability Distributions

Sampling Distributions

Introduction to Estimation

Introduction to Hypothesis Testing

Inference About a Population

Inference About Comparing Two Populat

Inference About Comparing Two Populat

Analysis of Variance

Chi-Squared Tests

Simple Linear Regression and Correlat

Multiple Regression

Review of Statistical Inference

Filters