BUAL 2650 Exam 1 with Correct Answers
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equal to .5
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1 A standard normal distribution has a mean of ________ and standard deviation of ________.
Which of the following statements is not a property of the normal probability
distribution?
•A) The normal distribution is symmetric.
•B) 95.44 percent of all possible observed values of the random variable x are within
2 plus or minus three standard deviations of the population mean.
•C) The mean, median, and mode are equal.
•D) The area under the normal curve to the right of the mean is equal to the area under
the normal curve to the left of the mean.
•E) All of these answers are properties of the normal distribution
, Given that X is a normal random variable, the probability that a given value of X is
below its mean is ________.
A) 1
B) equal to .5
C) less than .5
D)greater than .5
4 P(z>1.5)=
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Terms in this set (33)
A standard normal zero, one
distribution has a mean of
________ and standard
deviation of ________.
The area under the normal greater than
curve between z = 0 and z
= 1 is ________ the area under
the normal curve between
z = 1 and z = 2.
DF = n-1
P(z<2.13)= 0.9834
P(z>1.5)= 0.0668
P(-1<z<1)= 0.6826
________ is rejecting H0 when a type 1 error
H0 is true.
Save
Practice questions for this set
Learn 1 /7 Study with Learn
equal to .5
Give this one a try later!
1 A standard normal distribution has a mean of ________ and standard deviation of ________.
Which of the following statements is not a property of the normal probability
distribution?
•A) The normal distribution is symmetric.
•B) 95.44 percent of all possible observed values of the random variable x are within
2 plus or minus three standard deviations of the population mean.
•C) The mean, median, and mode are equal.
•D) The area under the normal curve to the right of the mean is equal to the area under
the normal curve to the left of the mean.
•E) All of these answers are properties of the normal distribution
, Given that X is a normal random variable, the probability that a given value of X is
below its mean is ________.
A) 1
B) equal to .5
C) less than .5
D)greater than .5
4 P(z>1.5)=
Press any key to
Don't know?Continue
continue
Terms in this set (33)
A standard normal zero, one
distribution has a mean of
________ and standard
deviation of ________.
The area under the normal greater than
curve between z = 0 and z
= 1 is ________ the area under
the normal curve between
z = 1 and z = 2.
DF = n-1
P(z<2.13)= 0.9834
P(z>1.5)= 0.0668
P(-1<z<1)= 0.6826
________ is rejecting H0 when a type 1 error
H0 is true.
