CHALLENGE 6.2.1: Confidence intervals for population means. АCTIVITY 270604.2179714.gx3zgy7 Jump to level 1 Suppose the mean height in inches of all 9th grade students at one high school is estimated. The population standard deviation is 5 inches. The heights of 7 randomly selected students are 73, 75, 62, 74, 62, 71 and 60. T= Ex: 12.34 O Margin of error at 99% confidence level = Ex: 1.23 99% confidence interval = [ Ex: 12.34 Ex: 12.34 ] [smaller value, larger value] Check Next D- D.

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## Challenge Activity: Confidence Intervals for Population Means

### 6.2.1 Confidence Intervals for Population Means

**Scenario:**

Suppose the mean height in inches of all 9th grade students at one high school is estimated. The population standard deviation is 5 inches. The heights of 7 randomly selected students are 73, 75, 62, 74, 62, 71, and 60.

**Instructions:**

- Calculate the sample mean (\( \bar{x} \)).
- Determine the margin of error at a 99% confidence level.
- Construct the 99% confidence interval.

**Input Fields:**

- \( \bar{x} = \) [Input Box]
- Margin of error at 99% confidence level = [Input Box]
- 99% confidence interval = [ [Input Box], [Input Box] ]

  [smaller value, larger value]

**Buttons:**

- Check
- Next

This activity involves calculating and interpreting confidence intervals for a given set of data, using statistical formulas for accurate estimation.
Transcribed Image Text:## Challenge Activity: Confidence Intervals for Population Means ### 6.2.1 Confidence Intervals for Population Means **Scenario:** Suppose the mean height in inches of all 9th grade students at one high school is estimated. The population standard deviation is 5 inches. The heights of 7 randomly selected students are 73, 75, 62, 74, 62, 71, and 60. **Instructions:** - Calculate the sample mean (\( \bar{x} \)). - Determine the margin of error at a 99% confidence level. - Construct the 99% confidence interval. **Input Fields:** - \( \bar{x} = \) [Input Box] - Margin of error at 99% confidence level = [Input Box] - 99% confidence interval = [ [Input Box], [Input Box] ] [smaller value, larger value] **Buttons:** - Check - Next This activity involves calculating and interpreting confidence intervals for a given set of data, using statistical formulas for accurate estimation.
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