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The distribution of exam scores in a population is normal with a mean of 81 points and a standard deviation of 2.2. Under what conditions
The distribution of exam scores in a population is normal with a mean of 81 points and a standard deviation of 2.2. Under what conditions would a sampling distribution of means approximate the shape of a normal distribution? a. When n = 30 or more b. When n = 100 or more c. The sampling distribution will always approximate the shape of the normal distribution. d. The sampling distribution will never approximate the shape of the normal distribution
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