Mathematics, 17.07.2019 08:00 BrainlyAvenger

The mean of the test is 143 and the standard deviation is 15.7. if the scores have a bell-shaped distribution, what percentage of the scores are between 111.6 and 174.4?

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The mean of the test is 143 and the standard deviation is 15.7. if the scores have a bell-shaped dis...