Question

Question 4 (1 point)

Historically, 85.25% of packages delivered by UPS are on time. Suppose 136 deliveries are randomly selected for quality control. What is the probability that between 79.65% and 85.29% of the deliveries were on time?

Question 4 options:

	1) 0.5380
	2) 0.5275
	3) 0.4725
	4) 15.5256
	5) 10.7123

Question 5 (1 point)

Approximately 41.7% of all businesses are owned by women. If you take a sample of 167 businesses in Michigan, what is the probability that less than 38.81% of them would be owned by women?

Question 5 options:

	1) 0.7756
	2) 7.8484
	3) 0.2244
	4) <0.0001
	5) 0.5000

Question 6 (1 point)

The rainfall in Aberdeen Reservoir, Washington (the wettest place in the contiguous United States) averages 130.78 inches per year with a standard deviation of 6.568 inches. A random sample of 37 is taken from the population. What is the distribution of the sample mean?

Question 6 options:

	1) Approximately normal with mean 130.78 and standard error 6.568.
	2) 130.78 give or take 6.568.
	3) Approximately normal with mean 21.5 and standard error 1.08.
	4) Approximately normal with mean 130.78 and standard error 1.08.
	5) 68% of sample averages will fall between 124.2 and 137.35.

Answer 1