The graph below display the distribution of weights of 91 adult men. The shape i

Question

The graph below display the distribution of weights of 91 adult men. The shape is roughly bellcurved. Apply the 68%-95%-99.7% rule to estimate the mean and standard deviation of this distribution. Select the best answer.

9) The graph below display the distribution of weights of 91 adult men. The shape is roughly bell curved. Apply the 68%-95%-99.7% rule to estimate the mean and standard deviation of this distribution. Select the best answer. 140 180 220 a) The mean is about 160 and the standard deviation is about 21 b) The mean is about 160 and the standard deviation is about 11 c) The mean is about 160 but the standard deviation cannot be estimated. d) The mean cannot be estimated and the standard deviation is about 21 e) There is not enough information to estimate the mean and standard deviation.

Explanation / Answer

Option-A) Mean is about 160 and standard deviation is about 21.

     

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