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A random sample of Midsize Sedans’ Miles per Gallon (mpg) were recorded and the                   data is listed below....

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Statistics

A random sample of Midsize Sedans’ Miles per Gallon (mpg) wererecorded andthe                  data is listed below. Assume the miles per gallon are normallydistributed:

24.6     30.2     29.9     33.1      26.7

28.5     31.6     36.3     24.4      28.7

  1. Calculate the mean (1 pt):

  1. Calculate the standard deviation (1 pt):

  1. Construct a 90% confidence interval for population mean (4pts):
  1. Construct a 95% confidence interval for population standarddeviation (4 pts):

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