Miss brown is reading two books every three weeks she has read 12 bucks so far how many weeks has she been reading so far part b if miss brown wants to finish reading 12 books and 15 weeks what would you tell her to change

The ages of personnel in the accounting department of a large company are normally distributed with a standard deviation of 7 years. there is a 0.02275 probability that the age of any randomly chosen person in the department is less than 22 and 0.15866 probabilty that the age of any randomly chosen person is greater than 43. what is the mean of this distribution?