BUAL 2650 Exam 1 Review – |\ |\ |\ |\ |\ |\
Gupta QUESTIONS WITH |\ |\ |\
ANSWERS
It is appropriate to use the uniform distribution to describe a
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
continuous random variable x when |\ |\ |\ |\
relative frequencies of all possible values of x are about the same.
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
The normal approximation of the binomial distribution is
|\ |\ |\ |\ |\ |\ |\ |\
appropriate when |\
np ≥ 5 and n(1 − p) ≥ 5.
|\ |\ |\ |\ |\ |\ |\ |\
The fill weight of a certain brand of adult cereal is normally
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
distributed with a mean of 910 grams and a standard deviation of 5
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
grams. We calculated the value of z for a specific box of this brand
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
, of cereal, and the z value was negative. This negative z value
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
indicates that |\
the fill weight is less than 910 grams.
|\ |\ |\ |\ |\ |\ |\
Which of the following statements is not a property of the normal
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
probability distribution? |\
95.44 percent of all possible observed values of the random variable
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
x are within plus or minus three standard deviations of the
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
population mean. |\
If the random variable x is normally distributed, ______ percent of
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
all possible observed values of x will be within three standard
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
deviations of the mean. |\ |\ |\
99.73
The z value tells us the number of ________ that a value of x is
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
from the mean. |\ |\
Gupta QUESTIONS WITH |\ |\ |\
ANSWERS
It is appropriate to use the uniform distribution to describe a
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
continuous random variable x when |\ |\ |\ |\
relative frequencies of all possible values of x are about the same.
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
The normal approximation of the binomial distribution is
|\ |\ |\ |\ |\ |\ |\ |\
appropriate when |\
np ≥ 5 and n(1 − p) ≥ 5.
|\ |\ |\ |\ |\ |\ |\ |\
The fill weight of a certain brand of adult cereal is normally
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
distributed with a mean of 910 grams and a standard deviation of 5
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
grams. We calculated the value of z for a specific box of this brand
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
, of cereal, and the z value was negative. This negative z value
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
indicates that |\
the fill weight is less than 910 grams.
|\ |\ |\ |\ |\ |\ |\
Which of the following statements is not a property of the normal
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
probability distribution? |\
95.44 percent of all possible observed values of the random variable
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
x are within plus or minus three standard deviations of the
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
population mean. |\
If the random variable x is normally distributed, ______ percent of
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
all possible observed values of x will be within three standard
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
deviations of the mean. |\ |\ |\
99.73
The z value tells us the number of ________ that a value of x is
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
from the mean. |\ |\
