Question: Day 10 test Direction: Solve the following by Stepwise Method 1. A school principal in a laboratory school claimed that the reading comprehension test of

Day 10 test Direction: Solve the following by Stepwise Method 1. A school principal in a laboratory school claimed that the reading comprehension test of grade six pupils should have an average of 72.3 with a standard deviation of 7.8. If 50 randomly selected grade six pupils have an average of 76.7, test the difference if significant using z-test at 0.05 level of significance. 2. A study was made to check whether it is true that on the daily average, the income of men earn more than women in a certain factory. The following are the data: Sex Number of Workers Mean SD Male 75 P418.22 P36.20 Female 60 P381.65 P33.85 Use the z-test at 0.05 level of significance to test the significance on the difference

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