Mathematics, 27.08.2019 03:10 alove1777
The length, in words, of the essays written for a contest are normally distributed with a population standard deviation of 442 words and an unknown population mean. if a random sample of 24 essays is taken and results in a sample mean of 1330 words, find a 99% confidence interval for the population mean.
Answers: 3
, which is small sample (n<30) so the test applied here is a t-test.
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