The average life of a car tire is 50,000 miles.  The standard deviation is 2,000 miles   What percent of the tires will last longer than 52,000 miles?   If a tire store purchased 400 tires, how many tires would you expect to last longer than 54,000 miles

MATLAB: An Introduction with Applications
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Chapter1: Starting With Matlab
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The average life of a car tire is 50,000 miles.  The standard deviation is 2,000 miles

 

What percent of the tires will last longer than 52,000 miles?

 

If a tire store purchased 400 tires, how many tires would you expect to last longer than 54,000 miles?

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