The mean is 180 lbs. with standard deviation of 25 lbs. Normally distributed ...
guru2009 (Not rated)
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The mean is 180 lbs. with standard deviation of 25 lbs. Normally distributed. What is the probability of at least 3 out of 10 being greater than 180.
8 years ago
Since the distribution is normal, probability of any score being > 180 is 0.5 P(At least 3 scores out of 10 are > 180) = P(3 scores are > 180) + P(4 scores are > 180) + ... + P(All 10 scores are > 180) = (0.5 * 0.5 * .0.5) + (0.5 * 0.5 * 0.5 * 0.5) + .
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