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Use the calculator to nd the cumulative area to the left of x = 23, with mean of 21 and the st. deviation of 3.

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Use the calculator to nd the cumulative area to the left of x = 23, with mean of 21 and the st. deviation of 3. Round your answers to four decimal places. Question 8 1 pts A random variable X is normally distributed with u = 42 and o = 2.8. Find the probability that x is more than 45. Round your answer to three decimal places

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