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  1. (10 pts) If you are in a class with 95 students (you are one of the 95) and 11 others have test marks that exceed yours, what is your percentile?
  2. (15 pts) A bell-shaped curve has µ = 52, σ = 2. Please report an interval around µ that contains exactly 95% of the data.  Use correct interval notation.
  3. (15 pts) Suppose the distribution of hours of sleep among undergraduates is normal with µ = 8 hrs, σ = 2 hrs. Let X represent the amount of sleep by a randomly chosen undergraduate.  Please report these probabilities:
  4. P(X> 6hrs) P(X < 10hrs)