3 years ago

8 divded by 2 (2+2)= ?

Mathematics

1 answer:

Lostsunrise [7]3 years ago

4 0

Answer:

Step-by-step explanation:

8 / 2 (2+2)

8/2(4)

4(4)

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Answer:

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Step-by-step explanation:

We are given the following information in the question:

Mean, μ = $28,520

Standard Deviation, σ = $5600

Mean of sampling distribution =

$E(\bar{x}) = \mu = 28520$

As per Central Limit Theorem, if the sample size is large enough, then the sampling distribution of the sample means follow approximately a normal distribution.

Sample size, n = 66

Since the sample size is large, we can use normal distribution for approximation.

Standard error of mean =

$\displaystyle\frac{\sigma}{\sqrt{n}} = \frac{5600}{\sqrt{66}} = 689.31 \approx 689$

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