Groups of adults are randomly selected and arranged in groups of three P(x) The random variable x is the number in the group who say that they O 0.355 would feel comfortable in a self-driving vehicle Determine whether a probability distribution is given. If a probability distribution is given, find its 0.429 mean and standard deviation. If a probability distribution is not given, 0.188 identify the requirements that are not satisfied. 0.028 Does the fable show a probability distribution? Select all that apply. A. Yes, the table shows a probability distribution. )B. No, the random variable x's number values are not associated with probabilities. C. No, the random variable x is categorical instead of numerical D. No, the sum of all the probabilities is not equal to 1 E. No, not every probability is between i and 1 inclusive Find the mean of the random variable x. Select the correct choice below and, if necessary, fill in the answer box to complete your choice O A. = adult(s) (Round to one decimal place as needed.) O B. The table does not show a probability distribution. Find the standard deviation of the random variable x. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. o=| |adult(s) (Round to one decimal place as needed.) B. The table does not show a probability distribution