1. Which of the following statement is not correct?

(A) For most population distributions, regardless of shape, the sampling distribution of the mean is approximately normally distributed if samples of at least 30 are selected.

(B) If the population distribution is fairly symmetrical, the sampling distribution of the mean is approximately normal for samples as small as 5.

(C)If the population is normally distributed, the sampling distribution the mean is normally distributed regardless of the sample size.

(D) For most population distributions, regardless of shape, the sampling distribution of the mean is approximately normally distributed if samples of at least 20 are selected.

6. The owner of a fish market has an assistant who has determined that the weights of catfish are normally distributed, with mean of 3.2 pounds and standard deviation of 0.8 pound. If a sample of 25 fish yields a mean of 3.6 pounds, what is probability distribution of the sample mean?

1. The sample mean will follow a normal distribution with a mean of 3.2 pound and standard deviation of 0.8 pound.

1. The sample mean will follow a normal distribution with a mean of 3.6 pound and standard deviation of 0.8 pound.

1. The sample mean will follow a normal distribution with a mean of 3.2 pound and standard deviation of 0.16 pound.

1. None of the above is right.