A Grocery Store Manager Is Interested in Determining Whether or Not

question 4

Multiple Choice

A grocery store manager is interested in determining whether or not a difference exists between the shelf life of two different brands of doughnuts.A random sample of 100 boxes of each brand was selected and the shelf life in days was determined for each box.The difference in sample means is found to be $\bar { x } _ { 1 } - \bar { x } _ { 2 } = 0.8$ .Ten subsequent bootstrap samples from each of these original samples yield the following values of $\bar { x } _ { 1 } ^ { * } - \bar { x } _ { 2 } ^ { * }$ 1.8,2.7,-1.9,2.1,0.1,-0.5,-2.3,1.2,2.1,-1.0.Based on these ten values,find the bootstrap of the standard error of $\bar { x } _ { 1 } - \bar { x } _ { 2 }$ .

• A)1.7982
• B)0.5686
• C)3.2334
• D)0.43
• E)2.1111

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Definitions:

Gold Standard

A monetary system where a country's currency or paper money has a value directly linked to gold.

Convertible

A type of automobile with a flexible roof system that allows it to transform between an enclosed and an open-air form.

International Transactions

Trades, investments, and other financial actions that cross national borders.

Purchasing Power Parity

An economic theory that compares different countries' currencies through a "basket of goods" approach to determine the relative value of each currency.