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The following are the number of cars sold per day at ABC Motor corporation during the past 495 working days. Number of cars sold per Frequency of day, x outcomes 0 30 100 2 142 71 36 32 26 18 16 CO 14 10 8 11 2 Total 495 What is the standard deviation of the probability distribution of the number of cars sold in a given day? (input answer in 4 decimal places)The following are the number of cars sold per day at ABC Motor corporation during the past 500 working days. Number of cars Frequency of sold per day, x outcomes 0 35 1 100 2 142 71 36 32 26 18 8 16 9 14 10 8 11 2 Total 500 What is the probability that more than two but at most ten cars will be sold in a day? (input answer in 4 decimal places)The following are the number of cars sold per day at ABC Motor corporation during the past 500 working days. Number of cars Frequency of sold per day, x outcomes 0 35 1 100 2 142 71 36 32 26 18 8 16 9 14 10 8 11 2 Total 500 What is the probability that more than two but at most ten cars will be sold in a day? (input answer in 4 decimal places)The probabilities that discipline officers will discover violations of the student handbook in a certain school in a quarter are given in the following table. Number of Violations (v) Probability P(v) 3 0.3100 A 0.1200 5 0.1700 0.1200 7 0.1300 8 0.1000 9 0.0500 What is the probability that on a given day, discipline officers will discover at most 7 violations of the student handbook. (Input answer in 4 decimal places)There are 15 mobile phones in a package box, 9 of which are iphones. If a person takes 5 phones from the box, what is the probability that at most four iphones will be picked from the box? (Input answer in 4 decimal places)There are 15 mobile phones in a package box, 9 of which are iphones. If a person takes 5 phones from the box. What is the standard deviation of the number of iphones in the sample? (Input answer in 4 decimal places)