Lamont designs a survey of town residents in an attempt to predict who will be elected mayor. He chooses his sample of 500 peopl
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Answer:
Step-by-step explanation:
We are given that
Mean,%=68.5/100
Standard deviation, %=8.2/100
We have to find the probability that a student who wrote the examination had a mark between 80% and 100%.
We know that
Using the formula