TABLE 11-7 a Student Team in a Business Statistics Course Designed an Designed

question 141

Essay

TABLE 11-7
A student team in a business statistics course designed an experiment to investigate whether the brand of bubblegum used affected the size of bubbles they could blow. To reduce the person-to-person variability, the students decided to use a randomized block design using themselves as blocks. Four brands of bubblegum were tested. A student chewed two pieces of a brand of gum and then blew a bubble, attempting to make it as big as possible. Another student measured the diameter of the bubble at its biggest point. The following table gives the diameters of the bubbles (in inches) for the 16 observations.

-Referring to Table 11-7, what are the degrees of freedom of the F test statistic for testing the block effects?

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Definitions:

Import

The act of bringing goods or services into one country from another for the purpose of trade.

Interest Rate Parity

A theory suggesting that the difference in interest rates between two countries will be equal to the differential between the forward exchange rate and the spot exchange rate.

British Security

A financial instrument issued in the UK that represents either equity in a company, debt obligations, or other rights to ownership or profit.

Forward Rate

An agreed-upon price for a financial transaction that will occur at a future date.