Mat 540 Quiz 2

In: Business and Management

Submitted By ranatza
Words 1144
Pages 5

• Question 1
2 out of 2 points Seventy two percent of all observations fall within 1 standard deviation of the mean if the data is normally distributed. Answer Selected Answer: False
Correct Answer: False • Question 2
2 out of 2 points If two events are not mutually exclusive, then P(A or B) = P(A) + P(B) Answer Selected Answer: False
Correct Answer: False • Question 3
2 out of 2 points Probability trees are used only to compute conditional probabilities. Answer Selected Answer: False
Correct Answer: False • Question 4
2 out of 2 points Both maximin and minimin criteria are optimistic. Answer Selected Answer: False
Correct Answer: False • Question 5
0 out of 2 points The minimin criterion is optimistic. Answer Selected Answer: False
Correct Answer: True • Question 6
2 out of 2 points The Hurwicz criterion is a compromise between the maximax and maximin criteria. Answer Selected Answer: True
Correct Answer: True • Question 7
0 out of 2 points The maximin approach involves choosing the alternative with the highest or lowest payoff. Answer Selected Answer: True
Correct Answer: False • Question 8
2 out of 2 points Assume that it takes a college student an average of 5 minutes to find a parking spot in the main parking lot. Assume also that this time is normally distributed with a standard deviation of 2 minutes. Find the probability that a randomly selected college student will take between 2 and 6 minutes to find a parking spot in the main parking lot.
Answer
Selected Answer:
0.6247
Correct Answer:
0.6247

• Question 9
0 out of 2 points The chi-square test is a statistical test to see if an observed data fit a _________.
Answer…...

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