The weight of full-Russian Blue cat can be described by a Normal distribution with a mean of 11 pounds and a standard deviation of 1.3 pounds. (One of the largest breeds of cat is the Maine Coon cat which can weigh 25 pounds!)

a) Kitty has a full-grown Russian Blue cat that weighs 7.9 pounds. What is the z-score for this dog? (Express your answer to one decimal place.)

b) The answer to part a should be negative. Explain what the fact that the z-score is negative tells us about that cat.

Pls break it down

c) We know that there are two criteria for determining if a data value is an outlier. Using the three standard deviations criterion, is this data value an outlier. Be sure to explain your answer.