2. r=0.1,n=500 r=0.8,n=5 a biologist is studying the levels of heavy

2. r=0.1,n=500 r=0.8,n=5 A biologist is studying the levels of heavy metal contaminants among a population of the South Nakaratuan Chubby Bat. The biologist is interested in constructing a simple linear regression
model to investigate the relationship between weight of an animal and the level of heavy metal
contamination. In the proposed regression model the level of contaminant is the response
variable and weight is the explanatory variable. The contaminant level is measured in parts per
billion (ppb) and weight in grams. The SPSS output is given below. Use the output to answer the
following questions.
Model Summary
Model R R Square Adjusted R Std. Error of the Estimate Square
.921a 1 .848 .839 13.82229 a. Predictors: (Constant), weight
Model Sum of Squares
Regression 1 Residual df Mean Square 18143 1 18143 3247.94781 17 Sig. 18 Total 94.96 .000b 191.05575 21391 F a. Dependent Variable: contaminant
b. Predictors: (Constant), weight
Model Unstandardized Coefficients Standardized t Sig. Coefficients
1 (Constant)
weight Std. Error -71.63611 28.17794 2.18277 0.22399 Beta
.921 .021 9.74 .000 a. Dependent Variable: contaminant (a) What percent of variation in the values of contaminant level that is explained by the
linear regression model between contaminant level and weight?
(b) What is the correlation between contaminant level and weight?
(c) What is the predicted contaminant level for an animal weighted 150 grams? (d) One of the animals in this analysis had a weight of 145 grams and contaminant level of
222 ppb. What is the residual for this observation?
(e) What is least squares regression line?
(f) What is the average change in contaminant level when the weight of an animal is
increased by 1 gram?
(g) Construct a 99% confidence interval for the regression slope.
(h) The biologist wants to determine whether there is a positive linear association between
contaminant level and weight of an animal. Write down the appropriate hypotheses,
value of test statistic, degrees of freedom of the test statistic, p-value, and the

University Writings
Calculate your paper price
Pages (550 words)
Approximate price: -

Why Work with Us

Top Quality and Well-Researched Papers

We always make sure that writers follow all your instructions precisely. You can choose your academic level: high school, college/university or professional, and we will assign a writer who has a respective degree.

Professional and Experienced Academic Writers

We have a team of professional writers with experience in academic and business writing. Many are native speakers and able to perform any task for which you need help.

Free Unlimited Revisions

If you think we missed something, send your order for a free revision. You have 10 days to submit the order for review after you have received the final document. You can do this yourself after logging into your personal account or by contacting our support.

Prompt Delivery and 100% Money-Back-Guarantee

All papers are always delivered on time. In case we need more time to master your paper, we may contact you regarding the deadline extension. In case you cannot provide us with more time, a 100% refund is guaranteed.

Original & Confidential

We use several writing tools checks to ensure that all documents you receive are free from plagiarism. Our editors carefully review all quotations in the text. We also promise maximum confidentiality in all of our services.

24/7 Customer Support

Our support agents are available 24 hours a day 7 days a week and committed to providing you with the best customer experience. Get in touch whenever you need any assistance.

Try it now!

Calculate the price of your order

Total price:

How it works?

Follow these simple steps to get your paper done

Place your order

Fill in the order form and provide all details of your assignment.

Proceed with the payment

Choose the payment system that suits you most.

Receive the final file

Once your paper is ready, we will email it to you.

Our Services

No need to work on your paper at night. Sleep tight, we will cover your back. We offer all kinds of writing services.


Essay Writing Service

No matter what kind of academic paper you need and how urgent you need it, you are welcome to choose your academic level and the type of your paper at an affordable price. We take care of all your paper needs and give a 24/7 customer care support system.


Admission Essays & Business Writing Help

An admission essay is an essay or other written statement by a candidate, often a potential student enrolling in a college, university, or graduate school. You can be rest assurred that through our service we will write the best admission essay for you.


Editing Support

Our academic writers and editors make the necessary changes to your paper so that it is polished. We also format your document by correctly quoting the sources and creating reference lists in the formats APA, Harvard, MLA, Chicago / Turabian.


Revision Support

If you think your paper could be improved, you can request a review. In this case, your paper will be checked by the writer or assigned to an editor. You can use this option as many times as you see fit. This is free because we want you to be completely satisfied with the service offered.