aaronr5627 aaronr5627
  • 12-01-2024
  • Mathematics
contestada

Suppose lengths of text messages are normally distributed and have a known population standard deviation of 3 characters and an unknown population meana random sample of 22 text messages is taken and gives a sample mean of 31 characters. identify the parameters needed to calculate a confidence interval at the 90% confidence level. then find the confidence interval.

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