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OpenStudy (anonymous):
hey guys, can you please show me how to put this question in TI-84 plus? A lot of thanks. Here is the problem. The time take by students to complete a puzzle is normally distributed with mean 28.3 minutes and standard deviation 3.6 minutes. Calculate the probability that: _ a randomly selected student took at least 30 minutes to complete the puzzle _out of 10 randomly selected students, at most half of them took at least 30 minutes to complete the puzzle. I already got the first one, and I know how to put it in the TI-84, but the seconds one gives me problems, I don't know how to do it.
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