A Sample of 15 Clock Radios Is Selected in Sequence

question 2

Essay

A sample of 15 clock radios is selected in sequence from an assembly line. Each radio is examined and judged to
be acceptable (A) or defective (D). The results are shown below. Test for randomness. D D A A A
A A A A A
A A D D D

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Definitions:

Dispersion

A measure of the spread or variability of a set of values within a dataset.

Histogram

A graphical representation of the distribution of numerical data, using bars of different heights to show the frequency of data intervals.

Bimodal

Describes a distribution having two distinct peaks or modes, indicating the presence of two dominant groups or values within the dataset.

Coefficient Of Variation

A uniform metric for assessing the spread of a probability distribution or frequency distribution, determined by dividing the standard deviation by the mean.