QNT 275 Week 4 Quiz

QNT 275 Week 4 Quiz

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https://zh.scribd.com/document/340327850/Uop-Tutorial

 QNT 275 Week 4 Quiz

Chapter 06, Testbank, Question 001

 

 

Your answer is correct.

 

A continuous random variable is a random variable that can:

 

 

 

assume no continuous random frequency

 

assume any value in one or more intervals

 

have no random sample

 

assume only a countable set of values

 

 

Chapter 06, Testbank, Question 009

 

 

Your answer is correct.

 

Which of the following is not a characteristic of the normal distribution?

 

 

 

The value of the mean is always greater than the value of the standard deviation

 

The curve is symmetric about the mean

 

The two tails of the curve extend indefinitely

 

The total area under the curve is 1.0

 

 

Chapter 06, Testbank, Question 010

 

 

Your answer is correct.

 

The total area under a normal distribution curve to the left of the mean is always:

 

 

 

greater than .5

 

equal to zero

 

equal to 1

 

equal to 0.5

 

 

Chapter 06, Testbank, Question 015

 

 

Your answer is correct.

 

For the standard normal distribution, the mean is:

 

 

 

1 and the standard deviation is 1

 

0.5 and the standard deviation is 0.5

 

1 and the standard deviation is zero

 

zero and the standard deviation is 1

 

 

Chapter 06, Testbank, Question 020

 

 

Your answer is correct.

 

For the standard normal distribution, the area between z = 0 and z = 2.94, rounded to four decimal places, is:

 

the tolerance is +/-2%

 

Chapter 06, Testbank, Question 023

 

 

Your answer is correct.

 

For the standard normal distribution, the area to the right of z = -2.12, rounded to four decimal places, is:

 

the tolerance is +/-2%

 

 

Chapter 06, Testbank, Question 026

 

 

Your answer is correct.

 

For the standard normal distribution, the area between z = 0.24 and z = 1.03, rounded to four decimal places, is:

 

the tolerance is +/-2%

 

 

Chapter 06, Testbank, Question 033-035

The GMAT scores of all examinees who took that test this year produce a distribution that is approximately normal with a mean of 420 and a standard deviation of 34.

The probability that the score of a randomly selected examinee is between 400 and 480, rounded to four decimal places, is:

The probability that the score of a randomly selected examinee is less than 370, rounded to four decimal places, is:

The probability that the score of a randomly selected examinee is more than 530, rounded to four decimal places, is:
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