Suppose an x-distribution has mean μ = 8. Consider two corresponding x distributions, the first based on samples of size n = 49 and the second based on samples of size n = 81.   (a) What is the value of the mean of each of the two x distributions? For n = 49, μ x =  For n = 81, μ x =    (b) For which x distribution is P(x > 10.00) smaller? Explain your answer.   The distribution with n = 81 because the standard deviation will be larger. The distribution with n = 49 because the standard deviation will be larger.    The distribution with n = 81 because the standard deviation will be smaller. The distribution with n = 49 because the standard deviation will be smaller.   (c) For which x distribution is  P(6.00 < x < 10.00) greater? Explain your answer.   The distribution with n = 49 because the standard deviation will be larger. The distribution with n = 81 because the standard deviation will be larger.    The distribution with n = 49 because the standard deviation will be smaller. The distribution with n = 81 because the standard deviation will be smaller.

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Suppose an x-distribution has mean μ = 8.
Consider two corresponding x distributions, the first based on samples of size n = 49 and the second based on samples of size n = 81.
 
(a)
What is the value of the mean of each of the two x distributions?
For n = 49, μ x = 
For n = 81, μ x = 
 
(b)
For which x distribution is P(x > 10.00) smaller? Explain your answer.
 
The distribution with n = 81 because the standard deviation will be larger.
The distribution with n = 49 because the standard deviation will be larger.    The distribution with n = 81 because the standard deviation will be smaller.
The distribution with n = 49 because the standard deviation will be smaller.
 
(c)
For which x distribution is 
P(6.00 < x < 10.00) greater?
Explain your answer.
 
The distribution with n = 49 because the standard deviation will be larger.
The distribution with n = 81 because the standard deviation will be larger.    The distribution with n = 49 because the standard deviation will be smaller.
The distribution with n = 81 because the standard deviation will be smaller.
**Understanding Sampling Distributions**

Suppose an x-distribution has a mean \(\mu = 8\). Consider two corresponding \(\bar{x}\) (sampling distribution of the sample mean) distributions. The first is based on samples of size \(n = 49\), and the second is based on samples of size \(n = 81\).

**(a) Calculating the Mean of the Sampling Distributions**

What is the value of the mean of each of the two \(\bar{x}\) distributions?

- For \(n = 49\), \(\mu_{\bar{x}} =\) [Enter Mean]
- For \(n = 81\), \(\mu_{\bar{x}} =\) [Enter Mean]

**(b) Probability that \(\bar{x}\) Exceeds a Certain Value**

For which \(\bar{x}\) distribution is \(P(\bar{x} > 10.00)\) smaller? Explain your answer.

- \( \bigcirc \) The distribution with \(n = 81\) because the standard deviation will be larger.
- \( \bigcirc \) The distribution with \(n = 49\) because the standard deviation will be larger.
- \( \bigcirc \) The distribution with \(n = 81\) because the standard deviation will be smaller.
- \( \bigcirc \) The distribution with \(n = 49\) because the standard deviation will be smaller.

**(c) Probability within a Range**

For which \(\bar{x}\) distribution is \(P(6.00 < \bar{x} < 10.00)\) greater? Explain your answer.

- \( \bigcirc \) The distribution with \(n = 49\) because the standard deviation will be larger.
- \( \bigcirc \) The distribution with \(n = 81\) because the standard deviation will be larger.
- \( \bigcirc \) The distribution with \(n = 49\) because the standard deviation will be smaller.
- \( \bigcirc \) The distribution with \(n = 81\) because the standard deviation will be smaller.

This exercise helps understand the relationship between sample size, standard deviation, and probabilities in normal distributions.
Transcribed Image Text:**Understanding Sampling Distributions** Suppose an x-distribution has a mean \(\mu = 8\). Consider two corresponding \(\bar{x}\) (sampling distribution of the sample mean) distributions. The first is based on samples of size \(n = 49\), and the second is based on samples of size \(n = 81\). **(a) Calculating the Mean of the Sampling Distributions** What is the value of the mean of each of the two \(\bar{x}\) distributions? - For \(n = 49\), \(\mu_{\bar{x}} =\) [Enter Mean] - For \(n = 81\), \(\mu_{\bar{x}} =\) [Enter Mean] **(b) Probability that \(\bar{x}\) Exceeds a Certain Value** For which \(\bar{x}\) distribution is \(P(\bar{x} > 10.00)\) smaller? Explain your answer. - \( \bigcirc \) The distribution with \(n = 81\) because the standard deviation will be larger. - \( \bigcirc \) The distribution with \(n = 49\) because the standard deviation will be larger. - \( \bigcirc \) The distribution with \(n = 81\) because the standard deviation will be smaller. - \( \bigcirc \) The distribution with \(n = 49\) because the standard deviation will be smaller. **(c) Probability within a Range** For which \(\bar{x}\) distribution is \(P(6.00 < \bar{x} < 10.00)\) greater? Explain your answer. - \( \bigcirc \) The distribution with \(n = 49\) because the standard deviation will be larger. - \( \bigcirc \) The distribution with \(n = 81\) because the standard deviation will be larger. - \( \bigcirc \) The distribution with \(n = 49\) because the standard deviation will be smaller. - \( \bigcirc \) The distribution with \(n = 81\) because the standard deviation will be smaller. This exercise helps understand the relationship between sample size, standard deviation, and probabilities in normal distributions.
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