ded by 400 people, the average of the grades is 45 and the standard deviation is 5.7, showing a normal distribution. 50 samples of n=16 people were taken from this population to the returned lottery. Find the arithmetic mean and standard error of the distribution of the sample means A) 41 and 1.5

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In an exam attended by 400 people, the average of the grades is 45 and the standard deviation is 5.7, showing a normal distribution. 50 samples of n=16 people were taken from this population to the returned lottery. Find the arithmetic mean and standard error of the distribution of the sample means

A) 41 and 1.5



B) 43 and 1,425



C) 45 and 2,425



D) 45 and 1,425



E) 55 and 1,425

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