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

question 410

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 is normally distributed for the 4 brands.

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Definitions:

Iliac Crest

The iliac crest is the top border of the ilium, one of the bones that make up the human pelvis.

Calcaneus

The largest bone in the foot, forming the heel and serving as a foundation for the rear part of the foot structure.

Cuneiform Bones

A set of three small bones in the human foot, located between the navicular bone and the first, second, and third metatarsal bones.

Metatarsal Bones

The five long bones in the foot that connect the ankle to the toes.