Question: 4. Each paper used for packaging requires a minimum strength of 34 pounds per square inch. To check on the quality of the paper, a

4. Each paper used for packaging requires a minimum strength of 34 pounds per square inch. To check on the quality of the paper, a random sample of 13 pieces of paper is selected each hour at the production line and its strength [in pounds per square inch} are recorded. The paper strength is normally.r distributed with mean 25 and standard deviation is 3. i. What is the probabilityr that the mean paper strength of the random sample is more than 24'? {3 marks) ii. Find the new population mean of paper strength, if the probabilityr of the mean paper strength less than 25 is [11:135. {4 marks)

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