The weights of the apple in a local supermarket is normally distributed. the mean weight is 45 pounds with a standard deviation of 2.5 pounds. how much do the middle 68% of the apple weigh? between 42.5 and 47.5 pounds between 40 and 50 pounds between 37.5 and 52.5 pounds between 37.5 and 47.5 pounds

Acompany manufactures three types of cabinets. it makes 110 cabinets each week. in the first week, the sum of the number of type-1 cabinets and twice the number of type-2 cabinets produced was 10 more than the number of type-3 cabinets produced. the next week, the number of type-1 cabinets produced was three times more than in the first week, no type-2 cabinets were produced, and the number of type-3 cabinets produced was the same as in the previous week.