hw help, I keep getting one wrong!

A corporation is evaluating a proposed merger. The board of directors surveyed 53 stockholders concerning their position on the merger. The results are reported below: (Round the final answers to 1 decimal place.) Opinion Number of Shares Held Favour Opposed Undecided Total. Under 200 8 8 1 17 200 to under 1000 6 9 2 17 1000 or more 5 11 3 19 Total 19 28 6 53 a. What is the probability that a stockholder holds 1000 or more shares? Probability |:| % b. What is the probability that a stockholder holds less than 200 shares and is in favour of the merger? Probability % c. What is the probability that a stockholder holds between 200 to under 1000 shares or is opposed to the merger? Probability % d. What is the probability that a stockholder holds under 200 shares given that he/she is opposed to the merger? Probability %