# MAT 540 Week 2 Quiz - 87401

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## anjis_devis

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Question 1

1. Probability trees are used only to compute conditional probabilities.

True

False

2 points
Question 2

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

If two events are not mutually exclusive, then P(A or B) = P(A) + P(B)

True

False

2 points
Question 4

The Hurwicz criterion is a compromise between the minimax and minimin criteria.

True

False

2 points
Question 5

Using the minimax regret criterion, we first construct a table of regrets. Subsequently, for each possible decision, we look across the states of nature and make a note of the maximum regret possible for that decision. We then pick the decision with the largest maximum regret.

True

False

2 points
Question 6

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 7

Both maximin and minimin criteria are optimistic.

True

False

2 points
Question 8

The chi-square test is a statistical test to see if an observed data fit a _________.

Normal probability distribution

continuous probability distribution

particular probability distribution

All of the above
2 points

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