For a sample of eight bears, researchers measured the distances around the bears

Question

For a sample of eight bears, researchers measured the distances around the bears' chests and weighed the bears. Minitab was used to find that the value of the linear correlation coefficient is

requals=0.7160

Using

alphaequals=0.05,

determine if there is a linear correlation between chest size and weight. What proportion of the variation in weight can be explained by the linear relationship between weight and chest size? Click here to view a table of critical values for the correlation coefficient.

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a. Is there a linear correlation between chest size and weight?

A.

Yes, because the absolute value of the test statistic exceeds the critical value

of 0.707

B.

No, because the absolute value of the test statistic exceeds the critical value

of 0.707.

C.

Yes, because the test statistic falls between the critical values of

negative 0.707 and 0.707.

D.

The answer cannot be determined from the given information.

b. What proportion of the variation in weight can be explained by the linear relationship between weight and chest size?

nothing

(Round to three decimal places as needed.)

Explanation / Answer

Solution:-

a. option A.Yes, because the absolute value of the test statistic exceeds the critical valueof 0.707

b. r^2 = 0.513

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