Quiz2b

# Quiz2b - Quiz (WK2) 1. The shape of any uniform probability...

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Quiz (WK2) 1. The shape of any uniform probability distribution is (Points : 1) Negatively skewed Positively skewed Rectangular Bell shaped 2. The upper and lower limits of a uniform probability distribution are (Points : 1) positive and negative infinity. plus and minus three standard deviations. 0 and 1. the maximum and minimum values of the random variable. 3. What is the proportion of the total area under the normal curve within plus and minus two standard deviations of the mean? (Points : 1) 68% 99.7% 34% 95% 4. What is the area under the normal curve between z = 0.0 and z = 1.79? (Points : 1) 0.4633 0.0367 0.9599 0.0401 5. What is the area under the normal curve between z = 1.0 and z = 2.0? (Points : 1) 0.0228 0.3413 0.1359 0.4772

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6. The mean score of a college entrance test is 500; the standard deviation is 75. The scores are normally distributed. What percent of the students scored below 320? (Points : 1) About 50.82% About 34.13% About 7.86% About 0.82% 7. Two normal distributions are compared. One has a mean of 10 and a standard deviation of ten. The second normal distribution has a mean of 10 and a standard deviation of 2. Which of the following it true? (Points : 1)
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## This note was uploaded on 08/29/2011 for the course EC 315DLB taught by Professor Randallbarcus during the Fall '10 term at Park.

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Quiz2b - Quiz (WK2) 1. The shape of any uniform probability...

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