Business Statistics question help please

Anonymous
timer Asked: Aug 7th, 2016

Question description

Scores on a recent national statistics exam were normally distributed with a mean of 80 and a standard deviation of 6.

  1. What is the probability that a randomly selected exam will have a score of at least 71?
  2. What percentage of exams will have scores between 89 and 92?
  3. If the top 2.5% of test scores receive merit awards, what is the lowest score eligible for an award?

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