For a certain species of snake, the mean length of an adult is 63.4 cm with a standard deviation of 6.8 cm. (a) What percentage of the adult snakes have a length of more than 77.0 cm? (а) (b) What percentage of the adult snakes have a length between 59 cm and 65 cm? (b) (c) If we sample 450 adult snakes at random, about how many should have a length of at least 66 cm? (c)

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