Question

# A particular employee arrives at work sometime between 8:00 a.m. and 8:50 a.m. Based on past experience the company has determined that the employee is equally likely to arrive at any time between 8:00 a.m. and 8:50 a.m. Find the probability that the employee will arrive between 8:05 a.m. and 8:40 a.m. Round your answer to four decimal places, if necessary.

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## Answer to a math question A particular employee arrives at work sometime between 8:00 a.m. and 8:50 a.m. Based on past experience the company has determined that the employee is equally likely to arrive at any time between 8:00 a.m. and 8:50 a.m. Find the probability that the employee will arrive between 8:05 a.m. and 8:40 a.m. Round your answer to four decimal places, if necessary.

Sigrid
4.5
To find the probability that the employee will arrive between 8:05 a.m. and 8:40 a.m., we need to determine the length of the interval between 8:05 a.m. and 8:40 a.m. out of the total length of the interval between 8:00 a.m. and 8:50 a.m.

The length of the interval between 8:00 a.m. and 8:50 a.m. is 50 minutes $8:50 a.m. - 8:00 a.m. = 50 minutes$.

The length of the interval between 8:05 a.m. and 8:40 a.m. is 35 minutes $8:40 a.m. - 8:05 a.m. = 35 minutes$.

To determine the probability, we divide the length of the interval between 8:05 a.m. and 8:40 a.m. by the length of the interval between 8:00 a.m. and 8:50 a.m.:

$$\text{Probability} = \frac{\text{Length of interval between 8:05 a.m. and 8:40 a.m.}}{\text{Length of interval between 8:00 a.m. and 8:50 a.m.}}$$

$$\text{Probability} = \frac{35}{50}$$

Simplifying,

$$\text{Probability} = 0.7$$

Answer: The probability that the employee will arrive between 8:05 a.m. and 8:40 a.m. is 0.7.

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