Mathematics, 08.08.2021 03:00 americanbellabeauty
The standard deviation of test scores on a certain achievement test is . A random sample of scores on this test had a mean of . Based on this sample, find a confidence interval for the true mean of all scores. Then give its lower limit and upper limit. Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place. (If necessary, consult a list of formulas.)
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The standard deviation of test scores on a certain achievement test is . A random sample of scores o...
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