Slovakia

  1. The diagram below depicts three normal curves
    Three normal curves with different means and standard deviations
    1. Which curve has the smallest mean? _______
    2. Which curve has the smallest standard deviation? _______
    3. What is the mean for curve A? _______
  2. I run home in a mean time m = 61 minutes with a standard deviation s of 7 minutes. My times are normally distributed about the mean. Normal curve diagram
    1. What is the probability that a run will take less than 61 minutes? _______
    2. What is the probability that a run will take more than 68 minutes? _______
    3. If I run 50 runs home during 2001, how many runs would be expected to last between 54 minutes and 68 minutes? _______

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