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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?
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Do you know how to find the z-scores for 450 and 600?
No i find it confusing .
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?
yes thanckyou it clears up a byt more for me now .
Do you want to work out the two z-scores and work more through this problem?
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