Probability of diameter

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Please show calculations on how it's done. Thank you.

Sun Love grapefruit growers have determined that the diameters of their grapefruits are normally distributed with a mean of 4.5 inches and a standard deviation of 0.3 inches. If a grapefruit is selected at random, what is the probability that its diameter

a. is at least 4.14 inches?

b. will be between 4.8 adn 5.04 inches?

Reference no: EM13101867

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