Calculus and Above

Calculus Questions? Ask a Mathematician for Answers ASAP

Connect one-on-one with {0} who will answer your question

Question 1 1. Historical data...

Question 1

1.

Historical data indicates that only 20% of cable customers are willing to switch companies. If a binomial process is assumed, then in a sample of 20 cable customers, what is the probability that exactly 2 customers would be willing to switch their cable?

Answer

0.1

0.04

0.137

0.206

0.794

4 points

Question 2

1.

A risk avoider is a person for whom the utility of an outcome

Answer

decreases as the monetary value increases.

stays the same as monetary value increases.

increases at an increasing rate as the monetary value increases.

increases at a decreasing rate as monetary value increases.

None of these

4 points

Question 3

1.

If computing a causal linear regression model of Y = a + bX and the resultant r2 is very near zero, then one would be able to conclude that

Answer

Y = a + bX is a good forecasting method.

Y = a + bX is not a good forecasting method.

a multiple linear regression model is a good forecasting method for the data.

a multiple linear regression model is not a good forecasting method for the data.

None of these

4 points

Question 4

1.

A prediction equation for starting salaries (in $1,000s) and SAT scores was performed using simple linear regression. In the regression printout shown below, what can be said about the level of significance for the overall model?

Answer

SAT is not a good predictor for starting salary.

The significance level for the intercept indicates the model is not valid.

The significance level for SAT indicates the slope is equal to zero.

The significance level for SAT indicates the slope is not equal to zero.

None of these

4 points

Question 5

1.

A utility curve showing utility increasing at an increasing rate as the monetary value increases represents

Answer

a risk avoider.

utility assessment.

a risk seeker.

conditional values.

expected utilities.

4 points

Question 6

1.

The coefficient of determination resulting from a particular regression analysis was 0.85. What was the correlation coefficient, assuming a positive linear relationship?

Answer

0.5

-0.5

0.922

There is insufficient information to answer the question.

None of these

4 points

Question 7

1.

Suppose that, historically, April has experienced rain and a temperature between 35 and 50 degrees on 20 days. Also, historically, the month of April has had a temperature between 35 and 50 degrees on 25 days. You have scheduled a golf tournament for April 12. If the temperature is between 35 and 50 degrees on that day, what will be the probability that the players will get wet?

Answer

0.333

0.667

0.800

1.000

0.556

4 points

Question 8

1.

A discrete random variable has a mean of 400 and a variance of 64. What is the standard deviation?

Answer

64

8

20

400

None of these

4 points

Question 9

1.

Decision trees are particularly useful when

Answer

perfect information is available.

formulating a conditional values table.

the opportunity loss table is available.

a sequence of decisions must be made.

all possible outcomes and alternatives are not known.

4 points

Question 10

1.

The correlation coefficient resulting from a particular regression analysis was 0.25. What was the coefficient of determination?

Answer

0.5

-0.5

0.0625

There is insufficient information to answer the question.

None of these

4 points

Question 11

1.

Consider the following payoff table.

How much should be paid for a perfect forecast of the state of nature?

Answer

170

30

10

100

40

4 points

Question 12

1.

Suppose that when the temperature is between 35 and 50 degrees, it has historically rained 40% of the time. Also, historically, the month of April has had a temperature between 35 and 50 degrees on 25 days. You have scheduled a golf tournament for April 12. What is the probability that players will experience rain and a temperature between 35 and 50 degrees?

Answer

0.333

0.400

0.833

1.000

0.480

4 points

QuestionXXXXX Mac, a surgeon, must decide what mode of treatment to use on Mr. Samuels. There are three modes of treatment: Mode A, B, and C; and three possible states of nature: 1.Treatment succeeds and patient leads a normal life, 2. Patient survives treatment but is permanently disabled, and 3. Patient fails to survive treatment. Dr. Mac has prepared the decision table below. What mode of treatment maximizes the expected value?

Answer

Mode A

Mode B

Mode C

All three treatments are equally desirable.

Normal Life

4 points

Question 14

1.

Nick has plans to open some pizza restaurants, but he is not sure how many to open. He has prepared a payoff table to help analyze the situation.

As Nick does not know how his product will be received, he assumes that all three states of nature are equally likely to occur. If he uses the equally likely criterion, what decisi

1.

Historical data indicates that only 20% of cable customers are willing to switch companies. If a binomial process is assumed, then in a sample of 20 cable customers, what is the probability that exactly 2 customers would be willing to switch their cable?

Answer

0.1

0.04

0.137

0.206

0.794

4 points

Question 2

1.

A risk avoider is a person for whom the utility of an outcome

Answer

decreases as the monetary value increases.

stays the same as monetary value increases.

increases at an increasing rate as the monetary value increases.

increases at a decreasing rate as monetary value increases.

None of these

4 points

Question 3

1.

If computing a causal linear regression model of Y = a + bX and the resultant r2 is very near zero, then one would be able to conclude that

Answer

Y = a + bX is a good forecasting method.

Y = a + bX is not a good forecasting method.

a multiple linear regression model is a good forecasting method for the data.

a multiple linear regression model is not a good forecasting method for the data.

None of these

4 points

Question 4

1.

A prediction equation for starting salaries (in $1,000s) and SAT scores was performed using simple linear regression. In the regression printout shown below, what can be said about the level of significance for the overall model?

Answer

SAT is not a good predictor for starting salary.

The significance level for the intercept indicates the model is not valid.

The significance level for SAT indicates the slope is equal to zero.

The significance level for SAT indicates the slope is not equal to zero.

None of these

4 points

Question 5

1.

A utility curve showing utility increasing at an increasing rate as the monetary value increases represents

Answer

a risk avoider.

utility assessment.

a risk seeker.

conditional values.

expected utilities.

4 points

Question 6

1.

The coefficient of determination resulting from a particular regression analysis was 0.85. What was the correlation coefficient, assuming a positive linear relationship?

Answer

0.5

-0.5

0.922

There is insufficient information to answer the question.

None of these

4 points

Question 7

1.

Suppose that, historically, April has experienced rain and a temperature between 35 and 50 degrees on 20 days. Also, historically, the month of April has had a temperature between 35 and 50 degrees on 25 days. You have scheduled a golf tournament for April 12. If the temperature is between 35 and 50 degrees on that day, what will be the probability that the players will get wet?

Answer

0.333

0.667

0.800

1.000

0.556

4 points

Question 8

1.

A discrete random variable has a mean of 400 and a variance of 64. What is the standard deviation?

Answer

64

8

20

400

None of these

4 points

Question 9

1.

Decision trees are particularly useful when

Answer

perfect information is available.

formulating a conditional values table.

the opportunity loss table is available.

a sequence of decisions must be made.

all possible outcomes and alternatives are not known.

4 points

Question 10

1.

The correlation coefficient resulting from a particular regression analysis was 0.25. What was the coefficient of determination?

Answer

0.5

-0.5

0.0625

There is insufficient information to answer the question.

None of these

4 points

Question 11

1.

Consider the following payoff table.

How much should be paid for a perfect forecast of the state of nature?

Answer

170

30

10

100

40

4 points

Question 12

1.

Suppose that when the temperature is between 35 and 50 degrees, it has historically rained 40% of the time. Also, historically, the month of April has had a temperature between 35 and 50 degrees on 25 days. You have scheduled a golf tournament for April 12. What is the probability that players will experience rain and a temperature between 35 and 50 degrees?

Answer

0.333

0.400

0.833

1.000

0.480

4 points

QuestionXXXXX Mac, a surgeon, must decide what mode of treatment to use on Mr. Samuels. There are three modes of treatment: Mode A, B, and C; and three possible states of nature: 1.Treatment succeeds and patient leads a normal life, 2. Patient survives treatment but is permanently disabled, and 3. Patient fails to survive treatment. Dr. Mac has prepared the decision table below. What mode of treatment maximizes the expected value?

Answer

Mode A

Mode B

Mode C

All three treatments are equally desirable.

Normal Life

4 points

Question 14

1.

Nick has plans to open some pizza restaurants, but he is not sure how many to open. He has prepared a payoff table to help analyze the situation.

As Nick does not know how his product will be received, he assumes that all three states of nature are equally likely to occur. If he uses the equally likely criterion, what decisi

Show More

Show Less

Was this answer helpful?

Describe your issueThe assistant will guide you

Chat 1:1 with a tutorLicensed Experts are available 24/7

100% satisfaction guaranteeGet all the answers you need

Related Calculus and Above Questions

I am having trouble soving this problem as well. 2. The

hi i am having trouble soving this problem as well … read more

Quadratic Regression (QR) Data: On a particular day in

Quadratic Regression (QR)Data: On a particular day in April, the outdoor temperature was recorded at 8 times of the day, and the following table was compiled.X(Time of day, Hour) | Y temperature 7 35 … read more

Are you available right now? because another tudor has not

are you available right now? because another tudor has not gotten back to me, and I am taking a timed quiz....and it due in like 20min… read more

This is my Mid-term, and I have to get it finished by

Hello, This is my Mid-term, and I have to get it finished by 2am, are you available? if so, I have copied and pasted it below :). 1. A ________ displays the minimum, first quartile, median, third quar… read more

_______________________________________________________________________________ Quiz

_______________________________________________________________________________ Quiz 6 There are several operators working the same type of equipment assembly line. It has been noticed that the waste … read more

1. Enrollment in a particular class for the last four

1. Enrollment in a particular class for the last four semesters has been 122, 128, 100, and 155 (listed from oldest to most recent). The best forecast of enrollment next semester, based on a three-sem… read more

For RRJha (or anyone else available),Heres a few statistics

For RRJha (or anyone else available), Here's a few statistics questions I'm looking to get some answers to and I need your insight on how to solve them. TABLE 12-6 One of the most common questions of … read more

Question 1 (10 points) Question 1 Unsaved Use the given

Question 1 (10 points) Question 1 Unsaved Use the given data to find the equation of the regression line. Round the final values to three significant digits, if necessary. x| 24 26 28 30 32 y| 15 13 2… read more

I need help with homework. It is 10 multiple choice questions

I need help with homework. It is 10 multiple choice questions and it is from intro to statistics. Anytime today. No hurry!… read more

I have about 40 more minutes to turn in my statistic assignment

I have about 40 more minutes to turn in my statistic assignment and need help. Is there someone available to assist me? All questions are multiple chose except for one. #1 Suppose the following data r… read more

1. Given the linear correlation coefficient r and the sample

1. Given the linear correlation coefficient r and the sample size n, determine the critical values of r and use your finding to state whether or not the given r represents a significant linear correla… read more

1-Historical data indicates that only 20% of cable customers are willi

1-Historical data indicates that only 20% of cable customers are willing to switch companies. If a binomial process is assumed, then in a sample of 20 cable customers, what is the probability that no … read more

1. wants to know if there is a relation between money spent

1. Robert wants to know if there is a relation between money spent on gambling and winnings: Money Spent | Money Won 16 | 330 12 | 270 18 | 380 14 | 300 If he spends $20, how much can he expect to win… read more

Assignment 2: Linear Correlation and Hypothesis Testing You

Assignment 2: Linear Correlation and Hypothesis Testing You will be examining pairs of variables to determine if there is any linear relation between the variables. Background Reading: Linear relation… read more

Given the linear correlation coefficient R and the sample N

Question 1 of 20 Given the linear correlation coefficient r and the smaple size n, determine the critical values of r and use your finiding to state whether or not the given r represents a significant… read more

Last set of questions for tonight. 1)In a simple regression

Last set of questions for tonight. 1)In a simple regression analysis(where y is a dependent and x and independent variable), if the y intercept is positive, then? A)There is a positive correlation bet… read more

2. (Points: 1) True or FalseThe range is a measure

Answer 6. (Points: 1) The numerical value of the coefficient of determination r 2 a. is the proportion of the variation in the dependent variable y that is explained by the best-fit linear equation. b… read more

22) What parametric test is equivalent to the nonparametric

22) What parametric test is equivalent to the nonparametric Spearman's rank test? A. T-test of correlation coefficient B. T-test of two sample means C. T-test of one sample mean. D. T-test of two samp… read more

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.

JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.

Web sites like justanswer.com/legal

...leave nothing to chance.

...leave nothing to chance.

Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.

Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.

I will tell you that...the things you have to go through to be an Expert are quite rigorous.

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

Los Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

Hesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

Kernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

Woodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

Elkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

Dallas, TX

< Previous | Next >

rajeevanpillai

Master's Degree

1,306 satisfied customers

B.Sc Mathematics and M.Sc, M Phil Statistics

Mr. Gregory White

Master's Degree

114 satisfied customers

M.A., M.S. Education / Educational Administration

SusanAthena

Master's Degree

102 satisfied customers

Tutor for Algebra, Geometry, Statistics. Explaining math in plain English.

Dr Arthur Rubin

Doctoral Degree

96 satisfied customers

Ph.D. in Mathematics, 1978, from the California Institute of Technology, over 20 published papers

JACUSTOMER-yrynbdjl-

Master's Degree

42 satisfied customers

I have a MS in Mathematics and I have taught Mathematics for 10 years at the college level.

dhouse1940

Master's Degree

33 satisfied customers

BS mathematics, MS biostatistics, 35+ yrs designing & analyzing biological experiments.

Don

Master's Degree

29 satisfied customers

M.S. Astronautical Engineering. Math/Sci/Comp Tutor

< Previous | Next >

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.