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A stationery store wants to estimate the total retail value of the 300 greeting cards that it has in its inven - sample greeting baby

A hospital wants to save the total turnover of 300 greeting cards that you value in your inventory. What is the estimated upper and lower limits of confidence of 95% of the population, the total value of all greeting cards are made in the list if a sample mean of 20 greeting cards and the average value of 1, $ 67 and a standard deviation of 0.32 U.S. U.S. dollars