Classified ads in the Ithaca Journal offered several used Toyota Corollas for sale. Listed 

below are the ages of the cars and the advertised prices. 

Age (yr) Price Advertised ($)

1 13,990

1 13,495

3 12,999

4   9,500

4 10,495

5  8,995

5  9,495

6  6,999

7  6,950

7  7,850

8  6,999

8  5,995

10  4,950

10  4,495

13  2,850


(a) Report the linear correlation coefficient value and comment on the form, the 

direction, and strength of association between the age of a car and the advertised 


(b) Report the equation of the least-squares regression line. Interpret the coefficients. 

(c) Report and interpret the value of the coefficient of determination. 

(d) Carry out a T-test about correlation ( H1:p?0). Use a 5% level of significance.  



 Draw graphs and charts when appropriate and necessary to demonstrate your 

reasoning! Label all graphs and charts! 

Display formulas. Write complete sentences to summarize your conclusions. 

If use any table values, clearly state which tables you used (e.g. Table A-2, etc.).  

You may attach your excel output when appropriate or necessary (e.g. a scatterplot, 




Your work for all statistical hypothesis testing questions should include the following:

1. Established Ho and Ha.

2. Summary statistics (either computed or given in the problem)

3. The name of the test (e.g. 2sampleTtest or T-test about correlation, etc.)

4. A formula to compute a test statistic (e.g. 1Prop-Z test statistic, etc.)

5. A p-value of the test and/or a critical value from a statistical table.

6. Clearly state the decision rule you use the reach a conclusion. (You may have to 

sketch a graph to show rejection regions.) Do you “Reject Ho” or do you “Fail to 

Reject Ho”?

7. State your conclusion in plain language. Use complete sentences.

Looking for solution of this Assignment?


We deliver quality original papers

Our experts write quality original papers using academic databases.  

Free revisions

We offer our clients multiple free revisions just to ensure you get what you want.

Discounted prices

All our prices are discounted which makes it affordable to you. Use code FIRST15 to get your discount

100% originality

We deliver papers that are written from scratch to deliver 100% originality. Our papers are free from plagiarism and NO similarity

On-time delivery

We will deliver your paper on time even on short notice or  short deadline, overnight essay or even an urgent essay