abbyj6900 abbyj6900
  • 21-10-2022
  • Mathematics
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a researcher wants to make a 95% confidence interval for the mean amount of time middle school students take to finish reading a book. if it is known that the standard deviation of reading time is 4.5 days , and the researcher wants to be within 0.5 days of the population mean, what sample size should the researcher use to conduct this research?

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