According to studies, 1% of all patients who undergo laser surgery to correct their vision have serious post laser vision problems. In a random sample of 95,000 patients, let x be the number who experience serious post-laser vision problems. a. Find E(x). b. Find Var(x). c. Find the z-score for x = 980. d. Find the approximate probability that fewer than 980 patients in a sample of 95,000 will experience serious post-laser vision problems.

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