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

question 13

True/False

SCENARIO 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 Scenario 11-7,the randomized block F test is valid only if the population of diameters is normally distributed for the 4 brands.

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Post Increment

An operation, often seen in programming, that increases the value of a variable by one but returns the original value within the expression where it's used.

Pre Increment

An operation that increases a variable's value by one before the variable is used in an expression.

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A function or operation available for string objects that allow manipulation of textual data, such as concatenation, extraction, or comparison.

String Objects

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