Use the Runs Test to Determine Whether the Given Sequence

question 97

Essay

Use the runs test to determine whether the given sequence is random. Use a significance level
of 0.05. 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. A A D A A A D A A D
A D A A A D A A A A
A A D D A A A A D A

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Definitions:

CCA Rating

Cold Cranking Amps rating, indicating the ability of a battery to start an engine in cold temperatures, typically at 0°F.

Deep-cycling

A process of discharging a battery completely before recharging it, typically to increase its lifespan.

Rapid Charge

A method of quickly charging a battery to its capacity, often used in electric vehicles and mobile devices to decrease downtime.