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3 years ago

Assume standard deviation of all invoices is $200. Sample 100 invoices. What is the standard deviation of xbar

Mathematics

1 answer:

posledela3 years ago

3 0

Answer:

Step-by-step explanation:

Standard deviation of the mean is expressed as:

SM = s/√n

s is the standard deviation of all invoices

n is the sample size of the invoiced

Given

s = $200

n = 100

Required

Standard deviation of the mean

Substitute the given parameters into the given equation

SM = 200/√100

SM = 200/10

SM = 20

Hence the standard deviation of xbar is 20

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