Answer:
x=2,y=-3
Step-by-step explanation:
detailed explanation showed in the image above
Assessment items
1 answer:
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Answer:
The standard deviation of the sample mean decreases from 1.43 to 0.5 as n increases from 6 to 49.
Step-by-step explanation:
The standard deviation of the sample mean is given by the following formula:
In which is the standard deviation of the population and n is the size of the sample.
In this problem, we have that:
How is the standard deviation of the sample mean changed when the sample size is increased from n=6 to n=49?
n = 6
n = 49
The standard deviation of the sample mean decreases from 1.43 to 0.5 as n increases from 6 to 49.