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3. An instructor has found times spent by students on a particular homework assignment follow a normal distribution with mean 150 minutes and standard deviation

3. An instructor has found times spent by students on a particular homework assignment follow a normal distribution with mean 150 minutes and standard deviation of 40 minutes. The probability is 0.9 that a randomly chosen student spends more than how many minutes on this assignment? Can you please tell me how to solve this on Excel

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