Mathematics, 10.10.2019 16:30 sheena33

On a test of optimism, scores of people diagnosed with a particular disease are normally distributed with a mean of 20 and a standard deviation of 5.
what proportion of the scores are between 20 and 25? between 25 and 30? below 15?

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On a test of optimism, scores of people diagnosed with a particular disease are normally distributed...