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

question 76

True/False

TABLE 11-11
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.
-True or False: Referring to Table 11-11,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:

Bipolar Disorder

A mental health condition characterized by extreme mood swings that include emotional highs (mania or hypomania) and lows (depression).

Generalized Anxiety

A psychological disorder characterized by excessive, uncontrollable, and often irrational worry about everyday things, significantly surpassing normal anxiety levels.

Generalized Anxiety Disorder

A mental health disorder characterized by persistent and excessive worry about various aspects of daily life.

Major Depressive Disorder

A mental disorder characterized by a persistent and intense feeling of sadness or despair.