SCENARIO 11-12 a Student Team in a Business Statistics Course Designed an Designed

question 100

True/False

SCENARIO 11-12
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 Scenario 11-12, the randomized block F test is valid only if the
population of diameters has the same variance for the 4 brands.

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Definitions:

Limiting Factor

An environmental condition that constrains a population's size, growth rate, or distribution.

Landscape Ecology

A branch of ecology that focuses on the patterns and interactions between ecological processes and ecosystems within heterogeneous landscapes.

Laboratory Experiments

Controlled tests carried out in a lab environment to study the effects of variables in a scientific study.

Species

A group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding.