To qualify for a police academy, candidates must score in the top 10% on a general abilities test. The test has a mean of 200 and a standard deviation of 20. Find the lowest possible score to qualify. Assume the test scores are normally distributed.
Added by Fernando T.
Step 1
Using a standard normal distribution table or a z-score calculator, we find that the z-score for the top 10% is approximately 1.28. Show more…
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