Refer to Section 8.1 #19, part B. (b) Suppose a random sample of 20 pregnancies
ID: 3056760 • Letter: R
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.