A Sample of 30 Clock Radios Is Selected in Sequence

question 33

Essay

A sample of 30 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. $$\begin{array} { l l l l l l l l l l } \mathrm { A } & \mathrm { A } & \mathrm { D } & \mathrm { A } & \mathrm { A } & \mathrm { A } & \mathrm { D } & \mathrm { A } & \mathrm { A } & \mathrm { D } \\\mathrm { A } & \mathrm { D } & \mathrm { A } & \mathrm { A } & \mathrm { A } & \mathrm { D } & \mathrm { A } & \mathrm { A } & \mathrm { A } & \mathrm { A } \\\mathrm { A } & \mathrm { A } & \mathrm { D } & \mathrm { D } & \mathrm { A } & \mathrm { A } & \mathrm { A } & \mathrm { A } & \mathrm { D } & \mathrm { A }\end{array}$$

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Definitions:

Energy Use

The amount of energy consumed in a process or by an organization, household, or device, often with a focus on reducing negative environmental impact.

Capacity

The maximum amount that something can contain or produce.

Consumer Involvement

Consumer involvement refers to the degree of interest and engagement that a consumer has with a particular product, service, or brand, affecting their purchasing decisions.

Customer Contact Audit

A customer contact audit is a comprehensive review of all the points at which a company interacts with its customers, aiming to improve customer service and experiences.