11. A pediatrician records the number of ear infections that his patients have during the winter. A distribution of probabilities for number of ear infections is displayed below. Number of ear...

Extracted text: 11. A pediatrician records the number of ear infections that his patients have during the winter. A distribution of probabilities for number of ear infections is displayed below. Number of ear infections Probability | 1 0.08 3 4 0.08 0.28 0.35 0.16 0.03 0.02 a) What is the probability that a patient has less than 4 ear infections during the winter? b) What is the mean of the probability distribution? 12. A group of 330 people were surveyed. Their marital status was recorded along with answers to several questions. OD question asked was whether Social Life or Job contributes most to their general well-being. The results from this question appear in the table below. Widowed or divorced 56 Single (never married) 57 33 Married 69 Social Life Job 54 61 a) Find the probability that a randomly selected person chose Social Life. b) Find the probability that a randomly selected person is Married and chose Social Life. c) Find the probability that a randomly selected person chose Social Life given the person is Married.