Find the mean of this probability distribution. Round your answer to one decimal place. Question Help: D Post to forum Submit Question Find the standard deviation of this probability distribution. Use your mean rounded to 2 decimal places. Give your answer to 2 decimal places. Question Help: D Post to forum Submit Question For a group of four 50-year old men, the probability distribution for the number a who live through the next year is as given in the table below. P(x) 0 0.0+ 1 0.0005 2 0.0135 3 0. 1715 4 0.8145 Verify that the table is indeed a probability distribution. Then find the mean of the distribution. mean = Report answer accurate to 1 decimal place. Question Help: D Post to forum Submit QuestionConsider the discrete random variable X given in the table below. Calculate the mean, variance, and standard deviation of X. X 2 3 4 17 20 P(X) 0. 11 0.1 0.13 0.56 0.1 U = 02 S O = What is the expected value of X?The PTO is selling raffle tickets to raise money for classroom supplies. A raffle ticket costs $2. There is 1 winning ticket out of the 220 tickets sold. The winner gets a prize worth $84. Round your answers to the nearest cent. What is the expected value (to you) of one raffle ticket? 5:] Question Help: El Video Q Post to forum Submit