For each question, give an exact answer or give at least 4 decimal places. Problems 1 & 2 refer to the following chart which shows values of a random variable and the corresponding probability density function. 1. Find the expected value of X. 2. Find the standard deviation of X 3. Ajar contains 2 dimes and 4 quarters. You reach in and randomly select 2 coins. Let X represent the value of the 2 coins in cents. Find the expected value of X. You will need to make a table with the probability density function. Show your pdf to get credit for this question. ce ms 4. Find Pr[-1.39 s z s 0.62] 4 decimal places 5. Find Pr[Z 2 1.03] 4 decimal places