Math Problem Statement
Solution
In the image, you are asked to solve a problem related to the Central Limit Theorem. Here's a breakdown:
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Given Information:
- The population has a normal distribution with:
- Mean
- Standard deviation
- Sample size
- The population has a normal distribution with:
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Questions:
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What is the mean of the distribution of sample means?
- According to the Central Limit Theorem, the mean of the sampling distribution of the sample means, denoted by , is the same as the population mean:
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What is the standard deviation of the distribution of sample means?
- The standard deviation of the sampling distribution of the sample means, denoted by , is given by the formula: Let's calculate that: So, the standard deviation of the sample means is approximately , rounded to two decimal places as requested.
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Final Answers:
- Mean of sample means
- Standard deviation of sample means
Would you like more details or have any questions? Here are 5 related questions for practice:
- What happens to the standard deviation of the sample means if the sample size is increased?
- If the sample size was 50 instead of 107, how would change?
- Explain why the Central Limit Theorem is important when the sample size is large.
- How does the Central Limit Theorem apply when the population is not normally distributed?
- Calculate if the population standard deviation was and the sample size was .
Tip: As the sample size increases, the standard deviation of the sample means decreases, making the sample mean a more accurate estimate of the population mean.
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Math Problem Analysis
Mathematical Concepts
Central Limit Theorem
Sampling Distribution
Normal Distribution
Formulas
Mean of sample means: μ_x = μ
Standard deviation of sample means: σ_x = σ / √n
Theorems
Central Limit Theorem
Suitable Grade Level
Undergraduate
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