10 A manager asked her employees how many times they had given blood in the last year, The results of the survey are given below. The random variable x represents the number of times a person gave blood and P(x) represents the probability of selecting an employee who had given blood that percent of the time. X 0 1 2 3 5 6 0.30 0.25 0.20 0.05 0.04 0.02 a) [2 points] The value of the missing probability is b) (2 points] The mean of this probability distribution Include unit in your response. Round to two decimal places. c) [3 points] The standard deviation of this probability distribution is Include unit in your response. Round to two decimal places. d) [3 points] The probability that a person gave blood at most 4 times is