Three Brands of AAA Batteries Are Compared to Determine If

question 15

Multiple Choice

Three brands of AAA batteries are compared to determine if differences in
Lifetime exist. Each brand is tested in four devices (TV remote, hand-held game,
Flashlight and digital camera) . The experiment is run once for each combination of brand
And device. The twelve runs are ordered randomly. The time (in minutes) that each
Battery lasts under continuous usage is recorded. Based on the partial ANOVA results
Shown below, the F-statistic for testing whether the three brands of AAA batteries have
Equal mean lifetimes is
Two-way ANOVA: Time (min) versus Brand, Device $$\begin{array} { l r r r r r } \text { Source } & \text { DF } & \text { SS } & \text { MS } & \text { F } & \text { P } \\\text { Brand } & 2 & 2974 & 1487 & & \\\text { Device } & 3 & 2496533 & 832178 & & \\\text { Error } & 6 & 3017 & 503 & \\\text { Total } & 11 & 2502524 & & &\end{array}$$

• A) 2.96
• B) 1654.89
• C) 0.98
• D) 827.49
• E) 54.67

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Definitions:

Present Value

The present worth of a future amount of money or series of cash flows when discounted at a certain rate of return.

Salvage Received

Salvage received refers to the amount gained or recovered from the sale or disposal of an asset after it is no longer useful or at the end of its useful life.

Simple Rate

A basic or straightforward interest rate that is applied to an amount without compounding over a time period.

Investment

The allocation of resources, such as capital or time, with the expectation of generating a future return.