Suppose the ages of students in Statistics 101 follow a skewed-right distribution with a mean of 23 years and a standard deviation of 3 years. If we randomly sampled 100 students, which of the following statements about the sampling distribution of the sample mean age is incorrect?
A) The mean of the sampling distribution is equal to 23 years.
B) The shape of the sampling distribution is approximately normal.
C) The standard error of the sampling distribution is equal to 0.3 years.
D) The standard deviation of the sampling distribution is equal to 3 years.

Question

Quizplus · Accepted Answer

The standard deviation of the sampling distribution (standard error) is the population standard deviation divided by the square root of the sample size, which is 0.3 years, not 3 years.

Suppose the Ages of Students in Statistics 101 Follow a Skewed-Right