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What is the probability that the deal of a fivecard hand provides no aces?

What is the addition rule for mutually exclusive events?

What is the sum of the probabilities in a probability distribution?

What is a bin in a histogram?

Zack takes the SAT and his best friend Nick takes the ACT. Zack’s SAT math score is 680, and Nick’s ACT math score is 27. SAT math scores in the county are normally distributed, with a mean of 500 and a standard deviation of 100. ACT math scores in the county are also normally distributed, with a mean of 18 and a standard deviation of 6. Assuming that both tests measure the same kind of ability, who has scored better?

What is the z value such that 52% of the data are to its left?