Problem

A population has mean $\mu=32$ and standard deviation $\sigma=2$. Find $\mu_{\bar{x}}$ and $\sigma_{\bar{x}}$ for samples of size $n=25$. Round your answers to one decimal place if needed. \[ \begin{array}{l} \mu_{\bar{x}}=\square \quad \square \quad 0 \quad \square \\ \sigma_{\bar{x}}=\square \quad \square \end{array} \]

Solution

Step 1 :The mean of the sample means, denoted as \( \mu_{\bar{x}} \), is equal to the population mean, \( \mu \). So, \( \mu_{\bar{x}} = \mu = 32 \).

Step 2 :The standard deviation of the sample means, denoted as \( \sigma_{\bar{x}} \), is equal to the population standard deviation, \( \sigma \), divided by the square root of the sample size, \( n \). So, \( \sigma_{\bar{x}} = \frac{\sigma}{\sqrt{n}} \).

Step 3 :Let's calculate \( \sigma_{\bar{x}} \) using the given values of \( \sigma = 2 \) and \( n = 25 \).

Step 4 :After executing this calculation, we get the value of \( \sigma_{\bar{x}} = 0.4 \).

Step 5 :Final Answer: \[ \begin{array}{l} \mu_{\bar{x}}=\boxed{32} \ \sigma_{\bar{x}}=\boxed{0.4} \end{array} \]

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Source: https://solvelyapp.com/problems/TgR5Plt07k/

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