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[Solution Library] Grades of individuals are normally distributed with a population mean 85 and a population standard deviation 6. If you sampled students at

Question: Grades of individuals are normally distributed with a population mean 85 and a population standard deviation 6. If you sampled students at your school and assumed, as the null hypothesis, that they had the same grade as the population, then

  1. [4 pts] In the random sample of size n=100, find probability
  2. [4 pts] In the random sample of size n=81, find probability

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