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Sat scores are normally distrbuted with a mean of 2100 and a variance of 1600 a....

Sat scores are normally distrbuted with a mean of 2100 and a variance of 1600

a. what is the probability that someone will score between 2060 and 2160

b. probablity soneone will score less than 2050

c. minium score to rank top 10%
math   Statistics-And-Probability   
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