Confidence Interval Use the given degree of confidence and sample data to construct a confidence interval for the population mean u. Assume that the population has a normal distribution. n = 30, = 85, s = 7.2, 90% confidence To evaluated 1) Formula to find the Error 2) Za/2 value or ta/2 value 3) Error value 4) Confidence Interval

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# Confidence Interval

Use the given degree of confidence and sample data to construct a confidence interval for the population mean μ. Assume that the population has a normal distribution.

- n = 30,
- \( \overline{x} = 85 \),
- s = 7.2,
- 90% confidence

To be evaluated:

1. Formula to find the Error
2. \( Z_{\alpha/2} \) value or \( t_{\alpha/2} \) value
3. Error value
4. Confidence Interval
Transcribed Image Text:# Confidence Interval Use the given degree of confidence and sample data to construct a confidence interval for the population mean μ. Assume that the population has a normal distribution. - n = 30, - \( \overline{x} = 85 \), - s = 7.2, - 90% confidence To be evaluated: 1. Formula to find the Error 2. \( Z_{\alpha/2} \) value or \( t_{\alpha/2} \) value 3. Error value 4. Confidence Interval
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