TABLE 2-14 Given Below Is the Stem-And-Leaf Display Representing the Amount of Amount

question 104

Short Answer

TABLE 2-14
Given below is the stem-and-leaf display representing the amount of detergent used in gallons (with leaves in 10ths of gallons) in a month by 25 drive-through car wash operations in Phoenix.

-Referring to Table 2-14, if a percentage histogram for the detergent data is constructed, using "9.0 but less than 10.0 gallons" as the first class, what percentage of drive-through car wash operations use less than 12 gallons of detergent in a month?

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Definitions:

P < .05

A commonly used criterion in statistical hypothesis testing that indicates there is less than a 5% probability the observed differences or relationship occurred by chance, suggesting the results are statistically significant.

Probability

A measure of the likelihood that an event will occur.

Result

The outcome or consequence of an action, experiment, or process.

Statistically Significant

A term indicating that the results of a study are unlikely to have occurred by chance alone, according to predefined criteria.