Pizza Guy pizza delivery time for a pizza is approximately normally distributed with a mean of
19 minutes and a standard deviation of 7. Pizza Guy
guarantees delivery within 30 minutes or the pizza
is free. What percent of customers will get a free
pizza?

The best and most correct answer among the choices provided by your question is the first choice or letter A which is "45<s<65."

Let x = speed (in mph) 

45 <= x <= 65 for a car 
45 <= x <= 55 for a tractor 

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