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The number of potato chips in a bag is normally distributed with a mean of 71 and a standard deviation of 2. approximately what percent of bags contain between 69 and 73 potato chips? approximately 68% approximately 71% approximately 95% approximately 99.7%

Hi i’m not sure how to do question 20 if u could explain how to do it that’d b great

The ordered pair (2,-5.2) is located in quadrant iv