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At a local restaurant, the amount of time that customers have to wait for their food is normally distributed with a mean of 20 minutes and a standard deviation of 2 minutes. Using the empirical rule, determine the interval of minutes that the middle 99.7% of customers have to wait.



Answer :

Answer:

Step-by-step explanation:

99.7% carries mean _+std dev

20 _+2*3

20_+6

(20-6, 20+6)

(14, 26)

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