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About 8% of males are color-blind. A researcher needs a color-blind male for an experiment and begins checking the potential subjects. a) What's the probability that she finds a colorblind male before she checks the 5th male? b) How many potential subjects does she expect to check until she finds the first colorblind male? To get to work, a commuter must cross train tracks. The time the train arrives varies slightly from day to day, but the commuter estimates he will be stopped 10% of work days. During a certain 5-day work week, what is the probability that he gets stopped at least once