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Its z score is 1 9.
Standard normal distribution z score math. Z 00 01 02 03 04 05 06 07 08 09 3 9 00005 00005 00004 00004 00004 00004 00004 00004 00003 00003 3 8 00007 00007 00007 00006 00006 00006 00006 00005 00005 00005. It is possible to transform every normal random variable x into a z score using the following formula. It explains how to find the z score given a value of x as we. So the mean is 81 we go one whole standard deviation and then 0 9 standard deviations and that s where a score of 93 would lie right there.
The random variable of a standard normal distribution is known as the standard score or a z score. Which means it s 1 9 standard deviations above the mean. Table values represent area to the left of the z score. Let s take the calculator out.
It s 1 9 standard deviations. Z x μ σ where x is a normal random variable μ is the mean of x and σ is the standard deviation of x.
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