The diameter of screws produced by a particular machine is normally distributed. Based on past experience, it is known that 30 percent of the screws are less than 1.30 inches in diameter and that 40 percent of the screws is greater than 1.71 inches in diameter. How do you calculate z score?
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30 percent of the screws are less than 1.30 inches in diameter ... Based on past experience, it is known that 30 percent of the screws are ... 40 percent of the screws are greater than 1.71 inches.
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hope it will help you bro
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