Question: Answer the following questions using thez-score chartor by using a spreadsheet. Find the z-score for x = 8 if the mean is 7 and the

Answer the following questions using thez-score chartor by using a spreadsheet.

  1. Find the z-score for x = 8 if the mean is 7 and the standard deviation is 2.
  2. Find the percentile for x = 8 if the mean is 7 and the standard deviation is 2.
  3. For a mean of 20 and standard deviation of 5, find.
  4. For a mean of 75 and a standarddeviation of 3, find.
  5. For a mean of 153 and standard deviation of 25, find.
  6. IQ scores of people around the World are normally distributed, with a mean of 100 and a standard deviation of 15. A genius is someone with an IQ greater than or equal to 140. What percent of the population is considered genius?

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