Fifty-four wild bears were anesthetized, and then their weights and chest sizes

Question

Fifty-four wild bears were anesthetized, and then their weights and chest sizes were measured and listed in a data set. ResutsCorrelation Results are shown in the accompanying display. Is there sufficient evidence to support the claim that there is a linear correlation between the weights of bears and their chest sizes? When measuring an anesthetized bear, is it easier to measure chest size than weight? If so, does it appear that a measured chest size can be used to predict the weight? Use a significance level of o 0.05 Cormelation coeff, r: 0.958424 Critical n P-value (two tailed): 0.000 ± 0.2680855

Explanation / Answer

Sol:

r=0.958

crit r=0.268

There exists a strong positive relationship between chest size and weight

p=0.000

There is sufficient evidence

MARK OPTION A

YES BECAUSE THE ABSOLUTE VALUE OF THE TEST STATSITIC 0.958 EXCEED THE CRITICAL VALUE.

Solution2:

MARK OPTION D

Yes,it is easier to measure a chest size thena a weight because measuring wight would require lifting the bear onto scale.

the chest szie could be used to predict the weight because there is a linar correaltion between the two.

OPTIOND

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