Posted by **Lindsey** on Tuesday, July 10, 2012 at 12:02am.

You invent a new system to make excellent racing tires for the Indianapolis 500/ Your tires are good for an average of 105 miles, with a standard deviation of 7.5 miles. What is the probability that one of your tires can go for at least 44 laps? What is the probability that one of your tires will fail before the end of 36 laps?

One lap is 2.5 miles.

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