1.	The amount of fiber measured in grams in selected seven-grain products is 4, 10, 7, 7, 4, 1, and 1. Find the range of the data.
		A.	10	B.	9
		C.	7	D.	8
		Hint
	2.	For a set of data organized in a frequency distribution, the upper and lower values in each interval are called ______.
		A.	the class range	B.	class limits
		C.	class intervals	D.	class marks
		Hint
	3.	Construct a stem-and-leaf plot for the data {67, 90, 83, 85, 73, 80, 78, 79, 68, 71}.
		A.
		B.
		C.
		D.
		Hint
	4.	Find the value of x so that the mean of {3, 5, 7, 8, x} is 9.
		A.	21	B.	26
		C.	27	D.	22
		Hint
	5.	What is the standard deviation for the data {67, 90, 83, 85, 73, 80, 78, 79, 68, 71}?
		A.	about 7.17	B.	about 51.44
		C.	8	D.	about 7.56
		Hint
	6.	Given the partial table below, identify the upper and lower limits of an interval about the mean within which 45% of the values of a set of data can be found if the mean is 30.5 and the standard deviation is 13.8. Assume the data are normally distributed.
		A.	26.3-34.7	B.	5.5-22.1
		C.	9.6-18.0	D.	22.22-38.78
		Hint
	7.	A 1% level of confidence is given when ______.
		A.	none of these	B.	P = 95%
		C.	P = 99%	D.	P = 1%
		Hint
	8.	Find the interquartile range of the set of data below. 20, 15, 23, 14, 18, 12, 25, 10, 24, 12, 17
		A.	15	B.	11
		C.	9	D.	5
		Hint
	9.	Find the upper and lower limits of an interval about the mean within which 87% of the values of a set of normally distributed data can be found if and Use the table below to help you.
		A.	40–80	B.	44.2–85.8
		C.	52–78	D.	45.5–84.5
		Hint
	10.	From a population of 1,000 items, a sample of 750 is chosen and found to have a standard deviation of 33. Find the standard error of the mean.
		A.	3.65	B.	1.2
		C.	1.04	D.	2.6
		Hint