A Manufacturer of Dodge Balls Uses a Machine to Inflate

question 44

Multiple Choice

A manufacturer of dodge balls uses a machine to inflate its new balls to a pressure of 13.5 pounds (σ = 0.1) .When the machine is properly calibrated,the mean inflation pressure is 13.5 pounds,but uncontrollable factors can cause the pressure of individual dodge balls to vary.For quality control purposes,the manufacturer wishes to estimate the mean inflation pressure to within 0.025 pounds of its true value with 99 percent confidence.What sample size should be used?

• A)677
• B)107
• C)35
• D)27
• E)11

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Definitions:

Double-Declining Balance

A method of accelerated depreciation which doubles the normal depreciation rate, reducing the asset's book value more quickly in its early years.

Salvage Value

The estimated residual value of an asset at the end of its useful life.

Straight-Line Depreciation

A method of allocating an asset's cost evenly across its useful life.

Salvage Value

The estimated resale value of an asset at the end of its useful life, often considered during depreciation calculations.