In this normal distribution, the value 28 is 2 standard deviations above the mean.
To solve this problem
We can use the formula:
Value = Mean + (Number of Standard Deviations * Standard Deviation)
The mean, number of standard deviations, and standard deviation in this instance are 18 and 5, respectively.
Enter the following values in the formula:
Value = 18 + (2 * 5)
Value = 18 + 10
Value = 28
So, In this normal distribution, the value 28 is 2 standard deviations above the mean.