Beccas dad told her that she needs to practice piano for two hours this week so far she has practiced 20 minutes on Monday a hal
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Answer:
The standard error for the sampling distribution is 1.323.
Step-by-step explanation:
Let <em>X</em> = scores of girls and <em>Y</em> = scores of boys.
The information provided is:
As the population standard deviations are not known, use a pooled standard deviation to estimate the standard error of the sampling distribution.
The formula of pooled standard deviation is:
Compute the standard error for the sampling distribution as follows:
Thus, the standard error for the sampling distribution is 1.323.