3. A fair coin is tossed 40 times. (15 points) (a) Using the normal approximation to estimate the chance of getting exac
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3. A fair coin is tossed 40 times. (15 points) (a) Using the normal approximation to estimate the chance of getting exac
3. A fair coin is tossed 40 times. (15 points) (a) Using the normal approximation to estimate the chance of getting exact 20 heads. (10 points) (b) To use binomial formula to find the chance of getting exact 20 heads. 5 points)
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