Question: The state test scores for 12 randomly selected high school seniors are shown on the right. Complete parts (a) through (c) below. Assume the population

The state test scores for 12 randomly selected high school seniors are shown on the right. Complete parts (a) through (c) below.

Assume the population is normally distributed.

1426

1228

988

695

729

836

728

750

542

624

1447

943

Assume the population is normally distributed.

  • Find the sample mean.
  • Find the standard deviation
  • Construct a 99% confidence interval for the population mean

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