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01-06-2023
Mathematics

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The mean and standard deviation of a random sample of n measurements are equal to 34.5 and 3.6 , respectively. a. Find a 90 % confidence interval for mu if nequals 144 . b. Find a 90 % confidence interval for mu if nequals 576 . c. Find the widths of the confidence intervals found in parts a and b. What is the effect on the width of a confidence interval of quadrupling the sample size while holding the confidence coefficient fixed

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