According to studies, 1 % of all patients who undergo laser surgery (i.e., LASIK) to correct their

Question:

According to studies, 1 % of all patients who undergo laser surgery (i.e., LASIK) to correct their vision have serious post laser vision problems (All About Vision, 2012). In a sample of 100,000 patients, what is the approximate probability that fewer than 950 will experience serious post laser vision problems?