Business, 16.06.2021 17:20, jadaroyval

Problem 7. (1 point) A statistics professor wants to compare today's students with those 25 years ago. All of his current students marks are stored on a computer se that he can easily determne the population mean However the mans 25 years ago reside only in his musty files. He does not want to retrieve all the marks and will be satisfied with a 80% confidence interval estimate of the mean mart 25 years ago the assumes that the population standard deviation is 11 how large a sample should he take to estimate the mean to within 3 marks? Sample Size - wewe

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Problem 7. (1 point) A statistics professor wants to compare today's students with those 25 years ag...