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What proportion of the normal distribution is located in the middle between the z scores: z...

  1. What proportion of the normal distribution is located in the middle between the z scores: z = -0.5 and z = +0.20. [1 point]
  2. A population has a mean of μx = 100 and standard deviation of σx = 25.
    1. What is the proportion of scores in this population that are lower than a score of x = 65 [1 point]
    2. What is the proportion of scores in this population that are greater than a score of x = 90 [1 point]
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