The number of chocolate chips in a popular brand of cookie is normally distributed with a mean of 19 chocolate chips per cookie and a standard deviation of 1.9 chips. When the cookies come out of the oven, only the middle 90% in terms of the number of chocolate chips are acceptable (the rest are considered defective). What are the cutoff numbers for the number of chocolate chips in acceptable cookies? (Give your answers to three decimal places) and

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