The standard deviation of test scores on a certain achievement test is  10.7 . A random sample of  70  scores on this test had a mean of  74.7 . Based on this sample, find a  95%  confidence interval for the true mean of all scores. Then complete the table below. Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place. What is the lower limit of the  95%  confidence interval?   What is the upper limit of the  95%  confidence interval?

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