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[All Steps] A population of scores forms a normal distribution with a mean of u=40 and a standard deviation of σ = 12. What is the probability of randomly

Question: A population of scores forms a normal distribution with a mean of u=40 and a standard deviation of σ = 12.

  1. What is the probability of randomly selecting a score less than X=34?
  2. What is the probability of selecting a sample of n=9 scores with a mean less than M=34?
  3. What is the probability of selecting a sample of n=36 scores with a mean less than M=34?

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