1.	Find the standard deviation of the set {4, 7, 3, 8, 2, 6, 5, 8, 3, 2} to the nearest hundredth.
		A.	2.23	B.	2.46
		C.	2.00	D.	2.35
		Hint
	2.	The scores on a national achievement test are normally distributed with a mean of 50 and a standard deviation of 10. Out of a group of 200 students, how many would you expect to score more than 70?
		A.	32	B.	5
		C.	1	D.	10
		Hint
	3.	Suppose that the mean is 50. How many standard deviations away is the value 65?
		A.	about 2 standard deviations	B.	about 1 standard deviation
		C.	within 1 standard deviation	D.	cannot be determined from given information
		Hint
	4.	Compute the variance and standard deviation for the set of {7,7,7,7}. Round to the nearest tenth.
		A.	0; 7	B.	0; 28
		C.	7; 0	D.	0; 0
		Hint
	5.	Compute the variance and standard deviation for the set of {284, 298, 302, 305, 310, 314, 321, 331, 337, 348}. Round to the nearest tenth.
		A.	335.7; 18.3	B.	289.2; 17.0
		C.	337.9; 18.4	D.	341.0; 18.5
		Hint