Refer to Section 8.1 #19, part B. (b) Suppose a random sample of 20 pregnancies

Question

Refer to Section 8.1 #19, part B. (b) Suppose a random sample of 20 pregnancies is obtained. Describe the sampling distribution of x with bar on top by selecting all that apply.

Multipul choice.

1. The standard deviation of the sampling distribution is sigma = 16.

2. The mean of the sampling distribution is mu = 266.

3. The sampling distribution is normally distributed since the population is normally distributed.

4. The sampling distribution is normally distributed since the sample size is n >= 30 (Central Limit Theorem).

5. The standard deviation of the sampling distribution is sigma/sqrt(n) = 16/sqrt(20) = 3.577709.

6.The sampling distribution is normally distributed since the sample size is n < 30.

7. The mean of the sampling distribution is sigma = 16.

Explanation / Answer

Note:here section 8.1#19 not given ; please revert if population is not normally distributed ; as if it is normally distributed below options are correct

correct option are :

2)2. The mean of the sampling distribution is mu = 266.

3. The sampling distribution is normally distributed since the population is normally distributed.

5) The standard deviation of the sampling distribution is sigma/sqrt(n) = 16/sqrt(20) = 3.577709.

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