A population of values has a normal distribution with \( \mu=204.2 \) and \( \sigma=24.3 \). You intend to draw a random sample of size \( n=184 \). What is the mean of the distribution of sample means? \( \mu_{x}=\square \) What is the standard deviation of the distribution of sample means? (Report answer accurate to 2 decimal places.) \( \sigma_{x}=\square \)
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The mean of the distribution of sample means, also known as the sampling distribution mean, is the same as the population mean. So in your case, \( \mu_{x} = 204.2 \). To find the standard deviation of the distribution of sample means, also known as the standard error, you use the formula: \[ \sigma_{x} = \frac{\sigma}{\sqrt{n}} = \frac{24.3}{\sqrt{184}} \approx \frac{24.3}{13.56} \approx 1.79. \] So your answers are: \( \mu_{x} = 204.2 \) \( \sigma_{x} \approx 1.79 \)
