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Dimas [21]
3 years ago
9

At a local restaurant, the amount of time that customers have to wait for their food is normally distributed with a mean of 26 m

inutes and a standard deviation of 4 minutes. Using the empirical rule, determine the interval of minutes that the middle 95% of customers have to wait.
Mathematics
1 answer:
Citrus2011 [14]3 years ago
7 0

The middle 95% of customers have to wait for 18 to 34 minutes at the resturant.

<h3>What is the empirical rule?</h3>

The empirical rule states that for a normal distribution. 68% of the values are within one standard deviation from the mean, 95% of the values are within two standard deviation from the mean and 99.7% of the values are within three standard deviation from the mean

Given a mean of 26 minutes and a standard deviation of 4 minutes. Hence:

95% are within 2 standard deviations = 26 ± 2(4) = (18, 34)

The middle 95% of customers have to wait for 18 to 34 minutes at the resturant.

Find out more on empirical rule at: brainly.com/question/10093236

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