Question 5 (2 points)

Statistical methods that assume the Normal probability distribution can be applied to processes whose data have a skew between -0.5 and +0.5, and a histogram that is roughly bell shaped.

Question 5 options:

	True
	False

Question 9 (4 points)

Select the true statements.

Select 2 correct answer(s)

Question 9 options:

	Distributions of sample means become approximately normally distributed when sample size is at least 30 for most populations.
	Distributions of sample means are approximately normally distributed because the sample mean estimates the population mean.
	Distributions of sample means become approximately normally distributed when sample size is at least 50 for highly skewed populations.