Question: Masonry work for a building has been estimated to take an average of 25 days with a standard deviation of 4 days. Answer the following

Masonry work for a building has been estimated to take an average of 25 days with a standard deviation of 4 days. Answer the following questions. Use the z-table.

A. Calculate the probability that the work can be completed in 30 days?

B. Find the probability that the work can be completed in a range of duration (24 - 27 days)

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