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# The voltages va, vb, vc, and vd inFigure P 4.3-2 are the node voltages corresponding to ISBN: 9781118477502 422

## Solution for problem P4.3-2 Chapter 4.3

Introduction to Electric Circuits | 9th Edition

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Problem P4.3-2

The voltages va, vb, vc, and vd inFigure P 4.3-2 are the node voltages corresponding to nodes a, b, c, and d. The current i is the current in a short circuit connected between nodes b and c. Determine the values of va, vb, vc, and vd and of i.

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3.3 INFERENCE FOR POPULATION VARIANCE 1) We can calculate the estimated population variancewith 2) also note that this is true: 2 *where X is representative of the chi square distribution with n-1 degrees of freedom 3.3.1 CONFIDENCE INTERVAL 3.3.2 HYPOTHESIS TEST 2 1) To test something dealing with σ we use test statistic: where the null hypothesis is still rejected when p-value

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##### ISBN: 9781118477502

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