8-9 please, i give good feedback!

QUESTION 8 Questions 8 and 9 relate to the following information. Consider the following probability distribution for random variable X, which is the number of number of economic recessions in the next 50 years: 0 2 3 4 f( x; ) 0.2 0.2 0.2 0.2 0.2 What is the standard deviation of X or Ox? Hint: Your first step is to calculate E(X) or /x. Include at least two decimal places in your answer. QUESTION 9 Suppose we tripled the value of X in the first row of the probability distribution above. What would the standard deviation become? Hint: Use your answer to Q8. Include at least two decimal places in your