In a sample of female smokers, the mean cigarettes per day is 9 and the standard deviation is 3 cigarettes.Assume the number of cigarettes per day by these women follows a normal distribution.If the top 10% of female smokers are considered heavy smokers, what is the minimum number of cigarettes smoked by a female heavy smoker?(Hint:Use Percentile-Z Scores Table)

14

5

13

15