MS 150 Statistics Spring 2001 Quickie Quiz Six

normal_curve.jpg (22909 bytes)

  1. What is the shape of the above curve?



  2. For normally distributed data, what is the probability that the data will be between the mean minus one standard deviation and the mean plus one standard deviation?



  3. For normally distributed data, what is the probability that the data will be more than one standard deviation above the mean?




  4. For a test with normally distributed scores and a mean m of 47 and a standard deviation s of 11, what is the probability a given score will be between 36 and 58?





  5. Assume that the arrival times of customers at Dolokei-Palipoa sakau market on a Friday evening are normally distributed with a mean m of 7:00 P.M. and a population standard  deviation s of 30 minutes. What percentage of customers have arrived by 7:00 P.M. or earlier?

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