According to one study, brain weights of men are normally distributed with a mea

Question

According to one study, brain weights of men are normally distributed with a mean of 1.30 kg and a standard deviation of 0.14 kg. Use the data to answer questions (a) through (e) a. Determine the sampling distribution of the sample mean for samples of size 3 The mean of the sample mean is ??-13 The standard deviation of the sample mean is ?' 0.0808. Round to four decimal places as needed) b. Determine the sampling distribution of the sample mean for samples of size 12 The mean of the sample mean is 1.30 The standard deviation of the sample mean is : 00404 Round to four decimal places as needed.) c. Construct a graph of the normal population distribution and the two sampling distributions for brain weights. Choose the correct graph below. O A. ??. Click to select your answer and then click Check Answer parts Clear All Final Check

Explanation / Answer

Ans : Option B.

(since for n=3 has larger S.D than when n=12 )   

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