Randomly-chosen minute
On Saturday morning, calls arrive at TicketMaster at a rate of 108 calls per hour. What is the probability of fewer than 3 calls in a randomly-chosen minute?
Answer
.2678
.8913
.7306
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The A stock had returns of 9%, -6%, 4%, and 10% over past four years. Determine standard deviation of the stock for past 4 years?
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