On hot, sunny, summer days, Jane rents inner tubes by the river that runs through her town; Based on her past experience, she has assigned the following probability distribution to the number of tubes she will rent on a randomly selected day. I: 25 50 75 100 Total P(x) .25 .43 .28 .04 1.00 (a) Calculate the expected value and standard deviation of this random variable X. (Round your answers to 2 decimal places.) Standard deviation _ (b) Describe the shape of this distribution. 0 Skewed to the right 0 Skewed to the left 0 Svmmetric