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

question 144

Multiple Choice

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.

-An agronomist wants to compare the crop yield of 3 varieties of chickpea seeds. She plants all 3 varieties of the seeds on each of 5 different patches of fields. She then measures the crop yield in bushels per acre. Which of the following tests will be the most appropriate to find out if there is any difference in crop yield among the 3 varieties?

• A) Randomized block F test for block effect
• B) One-way ANOVA F test for differences among more than two means
• C) Randomized block F test for differences among more than two means
• D) Two-way ANOVA F test for the variety effect

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Definitions:

Questionnaires

A research instrument consisting of a series of questions designed to gather information from respondents.

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Involving high cost or requiring a large amount of money to purchase or maintain.

Administered

The organized distribution or application of a test, survey, or treatment within a research study or therapeutic setting.

Motivation

The process that initiates, guides, and maintains goal-oriented behaviors, driving individuals to act.