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Please help on these two questions A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 227.3-em

Please help on these two questions

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A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 227.3-em and a standard deviation of 2.3-cm. For shipment, 15 steel rods are bundled together. Find the probability that the average length of a randomly selected bundle of steel rods is between 226.7-cm and 227.9-cm. Enter your answer as a number accurate to 4 decimal places. P (226.7cm

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