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in a given normal distribution the sample mean is 75 and the sample standard deviation is 4.

Sagot :

Answer:

The standard deviation of the sampling distribution of the mean is called the standard error of the mean. It is designated by the symbol: σM . Note that the spread of the sampling distribution of the mean decreases as the sample size increases. An example of the effect of sample size is shown above.

Step-by-step explanation: