X~N(50,5). P(X > 57) = __________ .

Question 21 options:

	91.9%
	88.5%
	11.5%
	8.1%

Question 22 (2 points)

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Employee productivity, which has been variable in the past (+/-10% around average), increased 5% over average during the first period after implementing a set of countermeasures that aimed to increase productivity. At this point--after one data reading--management should conclude the countermeasures were effective.

Question 22 options:

	True
	False

Question 23 (2 points)

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Which of the following might be a red flag for a potentially biased analysis?

Question 23 options:

	Providing sufficient context
	Failing to consider contradictory data
	Waiting to form an opinion until after analysis
	Reporting limitations of the data

Question 24 (2 points)

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The histogram indicates that

Question 24 options:

	15 employees are exactly at Pay Step 7
	The largest grouping of employees are at Pay Step 9
	There are 15 employees at Pay Step 6 and 7
	There is a right skew to the distribution

Question 25 (2 points)

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What is the probability that X will be between 46 and 49 based on the variable's distribution being X~N(50,5)?

Question 25 options:

	79.1%
	42.1%
	20.9%
	78.1%