TABLE 2-12 the Ordered Array Below Resulted from Taking a Sample of Sample

question 232

Short Answer

TABLE 2-12
The ordered array below resulted from taking a sample of 25 batches of 500 computer chips and determining how many in each batch were defective.
Defects

-Referring to Table 2-12, if a frequency distribution for the defects data is constructed, using "0 but less than 5" as the first class, the relative frequency of the "15 but less than 20" class would be ________.

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Definitions:

Confidence Interval

A statistical range, with a certain probability, within which the true value of a parameter lies.

Mean Number

The average value in a set of numbers, calculated by dividing the sum of all the numbers by the quantity of numbers.

T-test

A statistical test used to compare the means of two groups to determine if they are significantly different from each other.

Inference Conditions

Requirements that must be satisfied to validly use certain statistical inference methods.