# washed off within 5 minutes For the other 500 subjects the

Last updated: 1/25/2024

washed off within 5 minutes For the other 500 subjects the oil was washed off after 5 minutes The results are summarized in the following table Time Within Which Oil Was Washed Off Reaction Within 5 Minutes 1 P N Column Total 0 467 11 P M None 0 416 Mild iii P S Strong b Find the following probabilities 1 P N W 0 802 ii P SW 0 058 X c Find the following probabilities 1 P NA 0 132 ii P SIA 0 176 401 Let s use the following notation for the various events W washing oil off within 5 minutes A washing oil off after 5 minutes N no reaction M mild reaction S strong reaction Suppose a person is selected at random from this sample of 1 000 subjects a Find the following probabilities d Find the following probabilities 1 P N and W 0 401 70 29 500 After 5 Minutes Row Total 66 346 88 500 467 416 117 1 000