The mean serum cholesterol level for US adults was 204 with a standard deviation of 42.5. A simple random sample of 112 adults is chosen.what is the probability that the sample mean cholesterol level is greater than 212 is
what is the probability that the sample mean cholesterol level is between 192 and 202
it would be or would not be usual for the sample mean to be less than 197 since the probability is
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