The number of words in the active vocabulary of children of a particular age is normally distributed with a mean of 60 with a standard deviation of 8. a. Approximately what percentage of children...

The number of words in the active vocabulary of children of a particular age is normally distributed with a mean of 60 with a standard deviation of 8. a. Approximately what percentage of children score above 68? Above 76? Below 52? Between 52 and 60? (Use the normal curve approximation rule.) Be sure to illustrate EACH of your answers with a sketch (Hint: there are four answers). b. Explain your answers to a person who is familiar with mean, standard deviation, and Z scores, but not with normal curve percentages.