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20-01-2024
Mathematics

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4.A sample of reading scores of 35 fifth-graders has a mean of 82. The standard deviation of population is 15.
a.What is the best point estimate of the mean?
b.Find the 95% confidence interval of the mean reading scores of all fifth-graders.
c.Find the 99% confidence interval of the mean reading scores of all fifth-graders.
d.Which interval is larger? Why?

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