Find the standard deviation of the random variable X

ed and arranged in groups of three, The random variable x is the number in the group who say that they take one or more online courses Determine whether a probability a probability distribution is given, find its mean and standard deviation. If a probability distribution is not given, Identify the requirements that are not satisfied x PX 0 104 0 356 0 395 7 0.145 Does the table show a probability distribution? Select all that apply A. Yes, the table shows a probability distribution. B. No, not every probableity is between 0 and 1 inclusive. C. No, the random variable x is categorical instead of numerical D. No, the sum of all the probabilities is not equal to 1. WE. 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, fil In the answer bax to complete your choice OA p= students (Round to one decimal place as needed.) Next Statcrunch