statistics
posted by Jessica on .
Drivers pay an average of (mean $690) per year for automobile insurance the distribution of insurance payments is approximately normal with a standard deviation of 110 dollars. What proportion of drivers pay more than 100 dollars per year for insurance?

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Check for typo in your post. If there are no typos, here's how you would proceed.
Standardize:
P(X>100)
=1P(X≤100)
=1P(Z≤(100690)/110)
=1P(Z≤5.36)
Look up a probability table for
P(Z≤5.36) and calculate the answer accordingly.