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Fifty dash four wild bears were​ anesthetized, and then their weights and chest sizes were measured and listed in a data set. 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 alpha = 0.05.

Determine the null and alternative hypotheses.
Identify the correlation​ coefficient, r.
Identify the critical​ value(s).

Is there sufficient evidence to support the claim that there is a linear correlation between the weights of bears and their chest​ sizes? Choose the correct answer below​ and, if​ necessary, fill in the answer box within your choice. 

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?