# Mat 540 Week 3 Quiz 2 Latest Version (2016) - 95178

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## anjis_devis

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Question 1
1. If two events are not mutually exclusive, then P(A or B) = P(A) + P(B)
True
False
2 points
Question 2
1. Seventy two percent of all observations fall within 1 standard deviation of the mean if the data is normally distributed.
True
False
2 points
Question 3
1. Probability trees are used only to compute conditional probabilities.
True
False
2 points
Question 4
1. The equal likelihood criterion assigns a probability of 0.5 to each state of nature, regardless of how many states of nature there are.
True
False
2 points
Question 5
1. The Hurwicz criterion is a compromise between the minimax and minimin criteria.
True
False
2 points
Question 6
1. The Hurwicz criterion is a compromise between the maximax and maximin criteria.
True
False
2 points
Question 7
1. The minimin criterion is optimistic.
True
False
2 points
Question 8
1. A professor would like to utilize the normal distribution to assign grades such that 5% of students receive A's. If the exam average is 62 with a standard deviation of 13, what grade should be the cutoff for an A? (Round your answer.)
80
83

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