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boyakko [2]
3 years ago
11

If all possible samples of size n are drawn from an infinite population with a mean of 20 and a standard deviation of 5, then th

e standard error of the sampling distribution of sample means is equal to 1.0 only for samples of size:_____
Mathematics
1 answer:
Ugo [173]3 years ago
3 0

Answer:

25

Step-by-step explanation:

We know that the standard error of the sampling distribution of sample means is

Standard error=standard deviation/√n

√n=standard deviation/Standard error

n=(standard deviation/Standard error)²

We are given that standard deviation=5 and standard error=1. So,

n=(5/1)²

n=5²

n=25.

Thus, the required sample size is 25.

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