Use the Given Degree of Confidence and Sample Data to Find

question 102

Multiple Choice

Use the given degree of confidence and sample data to find a confidence interval for the population standard deviation ?.
Assume that the population has a normal distribution. Round the confidence interval limits to one more decimal place than is used for the original set of data.
-The amounts (in ounces) of juice in eight randomly selected juice bottles are:
$15.0 \quad 15.915 .2 \quad 15.7$
$15.0 \quad 15.8 \quad 15.415 .4$
Find a $98 \%$ confidence interval for the population standard deviation $\sigma$ .

• A) \(0.22 \mathrm { oz } < \sigma < 0.86 \mathrm { oz }\)
• B) \(0.22 \mathrm { oz } < \sigma < 0.72 \mathrm { oz }\)
• C) \(0.22 \mathrm { oz } < \sigma < 0.83 \mathrm { oz }\)
• D) \(0.21 \mathrm { oz } < \sigma < 0.72 \mathrm { oz }\)

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