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emilyencar11 emilyencar11
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Posts: 374
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6 years ago
Given that Z is a standard normal random variable, a negative value (z) on its distribution would indicate:
 a. z is to the left of the mean.
  b. the standard deviation of this Z distribution is negative.
  c. the area between zero and the value z is negative.
  d. None of these choices.

Q. 2

Given that Z is a standard normal variable, the variance of Z:
 a. is always greater than 2.0.
  b. is always greater than 1.0.
  c. is always equal to 1.0.
  d. cannot assume a specific value.

Q. 3

Given that Z is a standard normal random variable, the area to the left of a value z is expressed as
 a. P(Z  z)
  b. P(Z  z)
  c. P(0  Z  z)
  d. P(Z  -z)

Q. 4

What proportion of the data from a normal distribution is within two standard deviations from the mean?
 a. 0.3413
  b. 0.4772
  c. 0.6826
  d. 0.9544

Q. 5

A standard normal distribution is a normal distribution with:
 a. a mean of zero and a standard deviation of one.
  b. a mean of one and a standard deviation of zero.
  c. a mean always larger than the standard deviation.
  d. None of these choices.
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errybuns123errybuns123
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#1
Posts: 205
Rep: 2 0
6 years ago
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emilyencar11 Author
wrote...
#2
6 years ago
Bravo! This is awesome
wrote...
#3
6 years ago
Glad my efforts were helpful
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