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A sample of 20 test scores were taken from a normally distributed population produced the following...

  1. A sample of 20 test scores were taken from a normally distributed population produced the following data. Suppose we want to estimate the true mean test score of all using the ample values.

44 52 31 48 46 39 47 36 41 57 45 52 31 48 46 39 47 38 41 59

  1. Identify the parameter. Is it known?
  1. Make a 95% confidence interval for the mean score of all. Take the population standard deviation as 2.5.
Math   Statistics-And-Probability   
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