Assume that the price of regular unleaded gasoline across Canada is normally distributed with a mean of $3.10 and a standard

Question

Assume that the price of regular unleaded gasoline across Canada is normally distributed with a mean of $3.10 and a standard deviation of $0.28. What is the probability that the price of regular unleaded gasoline in a randomly selected gasoline station is either lower than $2.90 or higher than $3.35?

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