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The one-way commuting times from home to work for all employees working at a large company...

The one-way commuting times from home to work for all employees working at a large company have a mean of 39 minutes and a standard deviation of 8 minutes.

a. Using Chebyshev's theorem, find the minimum percentage of employees at this company who have one-way commuting times in the interval 19 to 59 minutes.

= _______________ %

b. Using Chebyshev's theorem, find the interval that contains one-way commuting times of at least 89% of the employees at this company.

=____________to__________minites (Give integers.)

Math   Statistics-And-Probability   
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