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1) A large group of students took a test in Physics and the final grades have a mean of 70 and a standard deviation of

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1) A large group of students took a test in Physics and the final grades have a mean of 70 and a standard deviation of 10. If we can approximate the distribution of these grades by a Gaussian distribution, what is the probability that the students a) scored higher than 70? b) would fail the test (grade

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