3. Suppose that the time it takes Jordan to solve a 9-disk Tower of Hanoi puzzle can be modeled by a normal random variable with a mean of 10 minutes and a variance of 4 minutes. On any given attempt, what is the probability that he takes between 9 and 10 minutes to solve the puzzle? Give an answer to 2 decimal places using the following information (which may not all be helpful): • ?(1/4) ? 0.599 • ?(1/2) ? 0.691 • ?(3/4) ? 0.773 • ?(1) ? 0.841
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