Consider a distribution with a mean of 15 and a standard deviation of 3.
If an observation from the distribution has a z-score of -2, what is the value?
Solution :
Given that,
mean = = 15
standard deviation = = 3
Using standard normal table ,
z = -2
Using z-score formula,
x = z * +
x = -2 * 3 + 15 = 9
Value = 9
Consider a distribution with a mean of 15 and a standard deviation of 3. If an observation from the distribution has a z...
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