An Electrical Engineer Wants to Compare the Resistance of Four

question 35

Multiple Choice

An electrical engineer wants to compare the resistance of four types of wire made from different materials.Five wires of equal lengths and cross sectional areas are prepared for each of the four wire types.Each section of wire is randomly tested by sending a current through the wire and measuring the resistance.Calculate
,
And the F-ratio.Can you reject
Using α = 0.05? The ANOVA table is listed below.

• A) = 97.915; =91.008;F-Ratio = 1.076;No,do not reject Using α = 0.05.
• B) = 97.915; =85.655;F-Ratio = 1.143;No,do not reject Using α = 0.05.
• C) = 97.915; =76.638;F-Ratio = 1.278;Yes,reject Using α = 0.05.
• D) =73.436; =76.638;F-Ratio = 0.958;No,do not reject Using α = 0.05.
• E) =73.436; =72.807;F-Ratio = 1.009;No,do not reject Using α = 0.05.

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Definitions:

Net Cash Inflow

The excess of cash receipts over cash disbursements during a certain period, reflecting the liquidity generated from operations.

Cash Payback Period

The duration it takes for an investment to generate an amount of cash equal to the initial investment cost.

Net Income

The overall income a company retains following the subtraction of all costs and tax obligations from its earnings.

Net Cash Inflows

The total amount of cash received minus the total amount of cash outflows over a specified period.