Question

Help please?
Suppose you have a normally distributed set of data pertaining to a standardized test. The mean
score is 500 and the standard deviation is 100. What is the z-score of 450 point score?

1.5


1


0.5


-0.5

Answer 1

Use the formula
\[\large z=\frac{X-\mu}{\sigma}\]
where X is the point score, mu is the population mean, and sigma is the standard deviation.

Answer 2

Plugging in the given values:
\[\large z=\frac{450-500}{100}=you\ can\ calculate\]

Answer 3

thank you!

Answer 4

You're welcome :)