1. Use the following chart of number of siblings of students in Long's Stats classes to answer the questions (round answers to three decimal places). Partial credit can only be awarded if adequate work is shown. # of Siblings Frequency a) [2] Complete the column for the probabilities, P(x). P(x) x fi b) [4] Draw, describe shape of graph below. 0 5 Shape: 24 c) [2] Calculate the mean, Ux. 2 21 W 10 A 9 d) [2] Calculate the standard deviation, ox. 4 P 2 e) [2] Find P (X = 4) = f) [2] Find P(X