The mean of a set of data is 108.06
Asked by maham237 @ in Mathematics viewed by 309 People
The mean of a set of data is 108.06 and its standard deviation is 115.45. Find the z score for a value of 489.67. Round to two decimal places as needed.
Asked by maham237 @ in Mathematics viewed by 309 People
The mean of a set of data is 108.06 and its standard deviation is 115.45. Find the z score for a value of 489.67. Round to two decimal places as needed.
Answered by maham237 @
Answer:
The z-score for the value 489.67 is 3.31.
Step-by-step explanation:
If X N (µ, σ²), then , is a standard normal variate with mean, E (Z) = 0 and Var (Z) = 1. That is, Z N (0, 1).
The distribution of these z-variate is known as the standard normal distribution.
The information provided is:
μ = 108.06
σ = 115.45
Compute the z-score for the raw score X = 489.67 as follows:
Thus, the z-score for the value 489.67 is 3.31.
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