Question 14 of 19 This question: 1 point(s) possible Su College students are randomly selected and arranged in groups of three. The random variable x X P(x) is the number in the group who say that they take one or more online courses. Determine 0 0.105 whether a probability distribution is given. If a probability distribution is given, find its mean and 1 0.353 standard deviation. If a probability distribution is not given, identify the requirements that are not 2 0.400 satisfied. 3 0.142 J A. Yes, the table snows a probability distribution. B. No, the sum of all the probabilities is not equal to 1.C. No, the random variable x is categorical instead of numerical. D. No, not every probability is between 0 and 1 inclusive. E. No, the numerical values of the random variable x are not associated with probabilities. 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. = students (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 6= students (Round to one decimal place as needed.) O B. The table does not show a probability distribution