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Mathematics, 15.01.2020 18:31 hhvgbv49551
Question regarding a normal distribution chart: ten thousand adults were given a literacy test. the results were nearly normally distributed (μ = 75, σ = 15).
a. about how many scored between 60 and 80?
b. approximately what score did only the top 15% exceed?
c. find the percentile rank of the person who scored 88.
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