Homework Help: statistics

Posted by diana on Friday, February 13, 2009 at 1:24am.

An instant lottery scratch-off game offers a 0.04 probability of winning on any one play. Plays are independent of each other. If you play 7 times, what is the probability you win at least once?

statistics - drwls, Friday, February 13, 2009 at 1:59am
That equals 1 minus the probability of never winning on any of 7 plays.
1 - (0.96)^7 = 24.9%

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