Use the Confidence Level and Sample Data to Find a Confidence

question 65

Multiple Choice

Use the confidence level and sample data to find a confidence interval for estimating the population µ. Round your answer to the same number of decimal places as the sample mean.
-37 packages are randomly selected from packages received by a parcel service. The sample has a mean weight of $10.3$ pounds and a standard deviation of $2.4$ pounds. What is the $95 \%$ confidence interval for the true mean weight, $\mu$ , of all packages received by the parcel service?

• A) \(9.4 \mathrm { lb } < \mu < 11.2 \mathrm { lb }\)
• B) \(9.3 \mathrm { lb } < \mu < 11.3 \mathrm { lb }\)
• C) \(9.5 \mathrm { lb } < \mu < 11.1 \mathrm { lb }\)
• D) \(9.6 \mathrm { lb } < \mu < 11.0 \mathrm { lb }\)

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Definitions:

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