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The time required for an automotive center to complete an oil change service on an automobile approximately follows a no

Posted: Mon Nov 15, 2021 11:13 am
by answerhappygod
The time required for an automotive center to complete an oil
change service on an automobile approximately follows a
normal​ distribution, with a mean of 17 minutes and
a standard deviation of 2.5 minutes. The automotive
center guarantees customers that the service will take no longer
than 20 minutes. If it does take​ longer, the
customer will receive the service for​ half-price.
What percent of customers receive the service
for​ half-price?