Time needed to complete a test normally distributed with a mean of 90 minutes and a...
Time needed to complete a test normally distributed with a mean of 90 minutes and a standard deviation of 20 minutes. if the top 5% are given a certificate, how fast must you complete the test to be eligible?
Keep getting 122.9, but this is wrong according to my prof. Thanks!
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Time needed to complete a test normally distributed with a mean
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