CSUF Practice Questions Chapter 6 Quiz ISDS 361A Skordi ACTUAL QUESTIONS AND CORRECT ANSWERS -

CSUF Practice Questions Chapter 6 Quiz
ISDS 361A Skordi ACTUAL QUESTIONS
AND CORRECT ANSWERS
-Which of the following is a characteristic of the standard normal
probability distribution?


Select one:


a. The standard deviation must be 1
b. The mean, median, and the mode are not equal
c. The distribution is not symmetrical
d. The standard deviation must be 0 - CORRECT ANSWERS
a. The standard deviation must be 1


A normal probability distribution
Select one:


a. has a standard deviation of 0.
b. can have mean of any numerical value.
c. needs to have a mean of 0.
d. must have a standard deviation of 1 and a mean of 0. - CORRECT
ANSWERS b. can have mean of any numerical value.


The probability that a continuous random variable takes any specific
value

, Select one:


a. is equal to zero.
b. is at least 0.5.
c. depends on the probability density function.
d. is very close to 1.0. - CORRECT ANSWERS a. is equal to
zero.


Which of the following is not a characteristic of the normal
probability distribution?
Select one:


a. The distribution is symmetrical
b. The standard deviation must be 1
c. The mean, median, and the mode are equal
d. The mean of the distribution can be negative, zero, or positive -
CORRECT ANSWERS b. The standard deviation must be 1


Larger values of the standard deviation result in a normal curve that is
Select one:


a. skewed to the right.
b. narrower and more peaked
c. skewed to the left.
d. wider and flatter. - CORRECT ANSWERS d. wider and
flatter.