Assume that a sample is used to estimate a population mean u. Find the margin of error M.E. that corresponds to a sample of size 20 with a mean of 55.2 and a standard deviation of 6.6 at a confidence level of 90%. Report ME accurate to one decimal place because the sample statistics are presented with this accuracy. M.E. %3D Answer should be obtained without any preliminary rounding. However, the critical value may be rounded to 3 decimal places.

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Chapter1: Starting With Matlab
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**Margin of Error Calculation for Estimating a Population Mean**

**Problem Statement:**

Assume that a sample is used to estimate a population mean \( \mu \). Find the margin of error \( M.E. \) that corresponds to a sample of size 20 with a mean of 55.2 and a standard deviation of 6.6 at a confidence level of 90%.

**Instructions:**

- Report \( M.E. \) accurate to one decimal place as the sample statistics are presented with this accuracy.
- Answers should be obtained without any preliminary rounding. However, the critical value may be rounded to 3 decimal places.

**Input Box:**

\[ M.E. = \]

**Submission:**

Use the "Submit Question" button after entering your answer.

**Additional Resources:**

For further assistance, click on "Message instructor" for help.
Transcribed Image Text:**Margin of Error Calculation for Estimating a Population Mean** **Problem Statement:** Assume that a sample is used to estimate a population mean \( \mu \). Find the margin of error \( M.E. \) that corresponds to a sample of size 20 with a mean of 55.2 and a standard deviation of 6.6 at a confidence level of 90%. **Instructions:** - Report \( M.E. \) accurate to one decimal place as the sample statistics are presented with this accuracy. - Answers should be obtained without any preliminary rounding. However, the critical value may be rounded to 3 decimal places. **Input Box:** \[ M.E. = \] **Submission:** Use the "Submit Question" button after entering your answer. **Additional Resources:** For further assistance, click on "Message instructor" for help.
Expert Solution
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Given:

n=20,σ=6.6,α=1-0.9=0.1

 

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