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Assume that weights of adult females are normally distributed with a mean of 79 kg and a standard deviation of 20 kg. What percentage of

Assume that weights of adult females are normally distributed with a mean of 79 kg and a standard deviation of 20 kg. What percentage of individual adult females have weights between 74kg and 84 kg? if samples of 81 adult females are randomly selected and the mean weight is computed for each sample. what percentage of the sample means are between 74 kg to 84 kg

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