Ten thousand adults were given a literacy test. The results were nearly normally distributed (= 75,= 15) A. About how many scored between 60 and 80?

 Ten thousand adults were given a literacy test. The results were nearly normally distributed (μ = 75, δ = 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.