Question

If a data set has mean of 150 and a standard deviation of 25, what is the z-score of an element with a value of 250?

Answer 1

Answer:

Z-score is 4

Step-by-step explanation:

N(150, 25^2)

Use z-score formula (can be found from internet with miu and sigma symbol)

$z = \frac{250 - 150}{25} \\ z = \frac{100}{25} \\ z = 4$