The 10th percentile of a Z distribution has 10 of the Z-values lying above it. Indicate whether ...

The 10th percentile of a Z distribution has 10 of the Z-values lying above it.
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Q. 2

If the value of Z is z = 99, that means you are at the 99th percentile on the Z distribution.
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Q. 3

The probability that a standard normal random variable Z is less than -3.5 is approximately 0.
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Q. 4

In the standard normal distribution, z0.05 = 1.645 means that 5 of all values of z are below 1.645 and 95 are above it.
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Q. 5

Given that Z is a standard normal random variable, a negative value of Z indicates that the standard deviation of Z is negative.
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Q. 6

A random variable X has a normal distribution with a mean of 250 and a standard deviation of 50 . Given that X = 175, its corresponding value of Z is -1.50.
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Q. 7

A random variable X has a normal distribution with mean 132 and variance 36 . If x = 120, its corresponding value of Z is 2.0.
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