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The time to complete an exam is approximately Normal with a mean of 54 minutes and a standard deviation of 2 minutes. The bel
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TOPIC:Normal distribution.

in X= The time to complete the exam =) define, min. So X N (M= 54, 5=2 So, we have, M=54, M-6= 54-2-52, M-20 54-4= 50, M-36 =

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