Calculus and Above

Calculus Questions? Ask a Mathematician for Answers ASAP

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

Can you help me...

Can you help me with these problems? Match the word or sentence with its correct meaning

Question 9 options:

the strength of the linear relationship between two numeric variables is measured by the

y-intercept

slope

Assuming a straight line relationship between x and y, if the correlation coefficient equals -0.80.

centroid

coefficient of determination tells you what?

residuals

Which of the following assumptions concerning the distribution of the variation around the line of regression is correct?

1. predicted value of y when x = 0

2. change in estimated average y per unit change in x

3. the proportion of total variation that is explained

4. the point that is always part of the regression line

5. the difference between the actual y values and the predicted y values

6. the distribution is normal

7. the slope is negative

8. coefficient of determinaton

Question 10 (4 points)

The coefficient of determination represents the ratio of the explained variation over the total variation

Question 10 options:

a) True

b) False

Question 11 (4 points)

The value of the correlation coefficient is always positive.

Question 11 options:

a) True

b) False

Question 12 (4 points)

The equation of the regression line for the paired data is y-hat = 6.18286 + 4.33937x. Find the standard error of estimate.

Question 12 options:a)3.1270b)2.6959c)1.6419d)0.8275

Question 13 (4 points)

The equation of the regression line for the paired data is y-hat = 6.1829 + 4.3394x and the standard error of estimate is se = 1.6419. Find the 99% prediction interval of y for x = 14.Question 13 options:a)59.6 < y < 74.2b)64.0 < y < 82.1c)66.9 < y < 79.2d)70.5 < y < 75.6

Question 14 (4 points)

The test scores of 6 randomly picked students and the numbers of hours they perpared are as follows: The equation of the regression line is y-hat = 1.06604x + 67.3491. Find the coefficent of determination.Question 14 options:a)0.6781b)0.2242c)0.0503d)-0.2242

Question 15 (4 points)

Based on the data from six students the regression equation relating number of hours of preparation (x) and test score (y) is y-hat = 67.3 + 1.07x The same data yield r = 0..224 and y-bar = 75.2. What is the best predicted test score for a student who spent 3 hours preparing for the test?

Question 15 options:a)78.1b)75.2c)59.7d)70.5

Question 16 (4 points)

Use the given data to find the equation of the regression line.Question 16 options:a)b)c)d)Question 17 (4 points)

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 correlation. Use a significance level of 0.05.

r = -0.174, n = 15

Question 17 options:a)Critical value: r = 0.514, no significant linear correlationb)Critical values: r = +/-0.532, no significant linear correlation.c)Critical values: r = +/- 0.514, significant linear correlation.d)Critical values: r = +/-0.514, no significant linear correlation.

Question 18 (6 points)

Use the following information to match the items with their correct values:

y-hat = 5 + 4xQuestion 18 options:

Total Variation

Unexplained Variation

Explained Variation

test statistic

Centroid

slope

standard error of estimate

y-intercept

Coefficeint of determination

Correlation Coefficient

1. (3, 17)

2. 160

3. 364

4. 524

5. 0.30534

6. 0.5526

7. 4

8. 5

9. 13.4907

10. 0.9376

**Tutor's Assistant:** The Tutor can help you get an A on your homework or ace your next test. Is there anything else important you think the Tutor should know?

I dont think so

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

The table below gives the list price and the number of bids

The table below gives the list price and the number of bids received for five randomly selected items sold through online auctions. Using this data, consider the equation of the regression line, yˆ=b0… read more

A 0.05 significance level is used for a hypothesis test of

A 0.05 significance level is used for a hypothesis test of the claim that when parents use a particular method of gender selection, the proportion of baby girls is less than 0.5. Assume that sample d… read more

Need help with my statistic test, due in 2 hours. Use the

Use the given information to find the coefficient of determination. A regression equation is obtained for a collection of paired data. It is found that the total variation is 24.488, the explained variation is 15.405, and the unexplained variation is 9.083. Find the coefficient of determination. can you help … read more

I have 16 Problem questions of Regression and Linear

I have 16 Problem questions of Regression and Linear Correlation I need to be answered expeditiously. Is that possible?… read more

I need help with a multiple choice test, it consists of

I need help with a multiple choice test, it consists of around 80 multiple choice questions is about statistics.… read more

Yes I have a test that is due today and I noticed you answered

yes I have a test that is due today and I noticed you answered most of the questions for someone else....how does this work… read more

The claim is that the proportion of peas with yellow pods is

The claim is that the proportion of peas with yellow pods is equal to 0.25 ( or 25%). The sample statistics from one experiment included 600 peas with 158 of them having yellow pods. Find the value of… read more

Module 5 discussion will be comparing the Pearson product moment

Module 5 discussion will be comparing the Pearson product moment correlation and Chi Square. The following information on Correlations will be useful in Module 5 Before we proceed we should discuss sc… read more

I need help with my intermediate statistics quiz right now!

Assume that the data has a normal distribution and the number of observations is greater than fifty. Find the critical z value used to test a null hypothesis. ALPHA = 0.05 for a left-tailed test. I ne… 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

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

I need help with an intro to statistics quiz. It is 20 questions

I need help with an intro to statistics quiz. It is 20 questions multiple choice. It has to be done today and I have 2 hours.… 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

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

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

Assignment 2: Linear Correlation and Hypothesis TestingYou

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

1. A researcher obtained a correlation of r = –0.72 between

1. A researcher obtained a correlation of r = –0.72 between the amount of time spent watching television and grade point average for college students. This means that there is a general tendency for s… 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 >

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

rajeevanpillai

Master's Degree

94 satisfied customers

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

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.