I If There Are Only Two Cells in a Goodness-Of-Fit

question 121

Multiple Choice

i. If there are only two cells in a goodness-of-fit test, we should expect 5 or more frequencies. ii. Chi-square goodness-of-fit test is the appropriate statistical test to use when you wish to determine how well an observed set of data fits an expected set of data.
iii. The null hypothesis in the goodness-of-fit test is that there is no difference.

• A) (i), (ii), and (iii) are all correct statements.
• B) (i) and (ii) are correct statements but not (iii).
• C) (i) and (iii) are correct statements but not (ii).
• D) (ii) and (iii) are correct statements but not (i).
• E) (i), (ii), and (iii) are all false statements.

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Definitions:

Diesel Fuel

A type of liquid fuel used in diesel engines, formulated from the distillation of petroleum.

Electronically Controlled

Refers to systems or components regulated or operated through electronic signals and sensors rather than manual or mechanical means.

J1939 Data Bus

The physical neural network of a CAN 2.0 network bus using J1939 protocols consisting of a twisted two-wire pair, SA stubs, and two terminating resistors. Used as the primary powertrain bus even in systems using multiple auxiliary buses. Theoretically capable of speeds of up to 1 Mb/s but usually maxed out at 500 Kb/s in current applications.

ECU Output

The signals or commands sent out by an Engine Control Unit to various systems within a vehicle.