A set of data values is normally distributed with a mean of 65 and standard deviation of five. Determine the Z-score of 78.
a. -1.12
b. 2.6
c. 1.12
d. -2.6
Here distribution is normal with mean=65 and standard deviation=5
Now we need to find z for x=78
As we know formula of z is
Hence answer here is b. 2.6
A set of data values is normally distributed with a mean of 65 and standard deviation...
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