MAT 221 Study Guide - Midterm Guide: 5,6,7,8, Continuity Correction, Summary Statistics
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MAT 221 Full Course Notes
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Instructions: write your name on each page, show all of your work and label your answers clearly to get full credit. Do not write on the rest of this cover sheet! (your instructor will use this sheet for recording your scores. ) A ballpoint pen factory produces 5% defective pens. Name the distribution of number of defective pens x. What is the mean and standard deviation of the distribution? (c) use normal approximation (without continuity correction) to nd the probability that at least 14 pens (out of 250 chosen randomly) are defective. A can of cola prints on its label that it contains 12 oz. of cola. A consumer group suspects that the amount of cola is less than 12oz. To test their suspicion, they took an srs of 25 cans of cola and found that the average amount of cola per can is. A corporation decides to give a drug-test to its employees.
