Resistors of various capacities are purchased in lots of 100, with specifications that each resistor have variability (as given by a relative standard deviation) of 2%. Assume that a 10-ohm and a 20-ohm resistor are selected at random from those purchased. a. Calculate the expected value and variance of the overall resistance if the two resistors are connected in series. b. Calculate the expected value and variance of the overall resistance if the two resistors are connected in parallel. c. Determine wh variation ich arrangement of these two resistors (series or parallel) yields the smaller coefficient of Variation.

answer:

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the equation above shows how temperature f, measured in degrees fahrenheit, relates to a temperature c, measured in degrees celsius. based on the equation, which of the following must be true?

a temperature increase of 1 degree fahrenheit is equivalent to a temperature increase of

5

9

degree celsius.

a temperature increase of 1 degree celsius is equivalent to a temperature increase of 1.8 degrees fahrenheit.

a temperature increase of

5

9

degree fahrenheit is equivalent to a temperature increase of 1 degree celsius.

a) i only

b) ii only

c) iii only

d) i and ii only

answer:

c

explanation:

answer:

a

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