The mean of a normally distributed group of weekly incomes o
The mean of a normally distributed group of weekly incomes of a large group of executives is $1,338 and the standard deviation is $95. What is the z-score for an income of $1,576?
| 10.00 | |
| 0.50 | |
| 2.00 | |
| 2.51 |
Solution
Z-score= (X-mean)/s
=(1576-1338)/95
=2.51
