Author Question: Suppose the ages of students in your program follow a positively skewed distribution with mean of 24 ... (Read 74 times)

V@ndy87 · **on:** Jun 24, 2018

Suppose the ages of students in your program follow a positively skewed distribution with mean of 24 years and a standard deviation of 4 years. If we randomly sampled 100 students, which of the following statements about the sampling distribution of the sample mean age is NOT true?
a. The mean of the sampling distribution of sample mean is equal to 24 years.
b. The standard deviation of the sampling distribution of sample mean is equal to 4 years.
c. The shape of the sampling distribution of sample mean is approximately normal.
d. All of these choices are true.

Question 2

Given that the sum of squares for error is 60 and the sum of squares for regression is 140, then the coefficient of determination is:
a. 0.429
b. 0.300
c. 0.700
d. None of these choices.