The assets (in billions of dollars) of the four wealthiest people in a particular country are 45, 28, 21, 18. Assume that samples of size n=2 are randomly selected with replacement from this population of four values. a. After identifying the 16 different possible samples and finding the mean of each sample, construct a table representing the sampling distribution of the sample mean. In the table, values of the sample mean that are the same have been combined. Probability Probability x 45 36.5 33 31.5 28 (Type integers or fractions.) 24.5 23 21 19.5 18

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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The mean of the population _______________, is equal to, greater to, or less to   the mean of the sample means, _______________. 

 

C.) Does the sample means target the value of the population mean? In general, do sample means make good estimates of population mean ? Why or why not?

 

The sample means do not target or target   the population mean. In general, sample means do or do not   make good estimates of population means because the mean is an unbiased or biased estimator. 

The data provided concerns the assets (in billions of dollars) of the four wealthiest people in a particular country, listed as 45, 28, 21, and 18. The exercise is to assume that samples of size n = 2 are randomly selected with replacement from this population of four values.

### Task:
a. After identifying the 16 possible samples and calculating the mean of each sample, construct a table to show the sampling distribution of the sample mean. In this table, values of the sample mean that are the same are combined.

### Table Layout:

#### \( \bar{x} \) - Probability
- **45:** [Probability]
- **36.5:** [Probability]
- **33:** [Probability]
- **31.5:** [Probability]
- **28:** [Probability]
- **24.5:** [Probability]
- **23:** [Probability]
- **21:** [Probability]
- **19.5:** [Probability]
- **18:** [Probability]

(Type integers or fractions.)

The table reflects the calculation of probabilities after determining the means of all possible sampled pairs. Each mean is accompanied by a placeholder for its respective probability, which should be filled as integer or fractional values.
Transcribed Image Text:The data provided concerns the assets (in billions of dollars) of the four wealthiest people in a particular country, listed as 45, 28, 21, and 18. The exercise is to assume that samples of size n = 2 are randomly selected with replacement from this population of four values. ### Task: a. After identifying the 16 possible samples and calculating the mean of each sample, construct a table to show the sampling distribution of the sample mean. In this table, values of the sample mean that are the same are combined. ### Table Layout: #### \( \bar{x} \) - Probability - **45:** [Probability] - **36.5:** [Probability] - **33:** [Probability] - **31.5:** [Probability] - **28:** [Probability] - **24.5:** [Probability] - **23:** [Probability] - **21:** [Probability] - **19.5:** [Probability] - **18:** [Probability] (Type integers or fractions.) The table reflects the calculation of probabilities after determining the means of all possible sampled pairs. Each mean is accompanied by a placeholder for its respective probability, which should be filled as integer or fractional values.
**Instructional Text for Educational Website:**

---

**b. Comparing Population Mean and Sample Mean:**

In this section, you are asked to analyze the relationship between the mean of the population and the mean of the sampling distribution of the sample mean. 

- The mean of the population, represented as \(\_\_\), is [dropdown box: greater than, less than, equal to] the mean of the sample means, represented as \(\_\_\).

*Note: Please round your answer to two decimal places as needed.*

---

**c. Evaluating Sample Means as Estimators of Population Means:**

This part encourages you to consider whether sample means can accurately target or represent the population mean.

- The sample means [dropdown box: target, do not target] the population mean. Generally, sample means [dropdown box: do, do not] make good estimates of population means because the mean is a [dropdown box: unbiased, biased] estimator.

---

No graphs or diagrams are included in this section.
Transcribed Image Text:**Instructional Text for Educational Website:** --- **b. Comparing Population Mean and Sample Mean:** In this section, you are asked to analyze the relationship between the mean of the population and the mean of the sampling distribution of the sample mean. - The mean of the population, represented as \(\_\_\), is [dropdown box: greater than, less than, equal to] the mean of the sample means, represented as \(\_\_\). *Note: Please round your answer to two decimal places as needed.* --- **c. Evaluating Sample Means as Estimators of Population Means:** This part encourages you to consider whether sample means can accurately target or represent the population mean. - The sample means [dropdown box: target, do not target] the population mean. Generally, sample means [dropdown box: do, do not] make good estimates of population means because the mean is a [dropdown box: unbiased, biased] estimator. --- No graphs or diagrams are included in this section.
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