- What sample size is needed to disprove the hypothesis that the probability of outcome A equals 0.25?

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A bell rings every 2 hours a second bell rings every 3 hours and a third bell rings every 4 hours If all 3 bells ring at 9 00 am at what time will all 3 bells next ring-? How many face cards are in a 52 deck? When two coins are tossed simultaneously what is the probability of obtaining at most one head? How many people are playing Monopoly right now? What percentage of the data falls outside 2 standard deviation of the mean?

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