Question

The average score on a standardized test is 500 points with a standard deviation of 50 points. What is
the probability that a student scores between 450 and 600 on the standardized test?

Answer 1

Do you know how to find the z-scores for 450 and 600?

Answer 2

No i find it confusing .

Answer 3

The formula to find the z-score is as follows
\[z=\frac{X-\mu}{\sigma}\]
where X is the reference value (either 450 or 600 in this case), mu is the population average and sigma is the standard deviation.
Can you find the 2 z-scores now?

Answer 4

yes thanckyou it clears up a byt more for me now .

Answer 5

Do you want to work out the two z-scores and work more through this problem?