Please explain 9 & 10- thank you so much

4:28 PM Sun Dec 6 . 7 77% a d21.mu.edu UDVI YuuUHI DINGy . LAPlum. 9. (10 pts) A machine weighs bags of M&Ms to ensure product consistency. The bags have a mean weight of 7 oz. of M&Ms with a standard deviation of 2.25 oz. a) If the amount of M&Ms is normally distributed, what is the probability that one bag has between 3.1 and 11.4 oz. of M&Ms? b) If we look at the amount of M&Ms in each bag (in the whole population of bags this machine fills), how many ounces of M&Ms are in the bags that are in the smallest 15%? 10. (15 points) Lactose intolerance causes difficulty digesting dairy products that contain lactose (milk sugar). It is particularly common among people of African and Asian ancestry. In the United States (ignoring other groups and people who consider themselves to belong to more than one race), 82% of the population is white, 14% is black, and 4% is Asian. Moreover, 15% of whites, 70% of blacks, and 90% of Asians are lactose intolerant a. The population of WI is almost 6 million people. Of them, about 7% are black. How many black people in WI do you expect to be lactose intolerant? b. What percent of the entire U.S. population is lactose intolerant? c. What percent of Americans who are lactose intolerant are Asian