In 2006 the total supply of electricity from all three sectors of the grid was ___________
a. 1.139 billion kilowatts
b. 1.128 billion kilowatts
c. 15.6 megawatts
A
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Which statement about stoichiometric coefficients (?) is false?
A. For every reactant with coefficient ?, there must be a corresponding product with that same coefficient ?. B. If the substance is a product, its ? will have a positive sign. C. A substance that appears as both a product and a reactant will have two unique ?’s. D. The ? values in a reaction can be modified if they are maintained in fixed proportion to one another. E. It is possible to have a non-integer ?.
Let X represent the number of events that are observed to occur in n units of time or space, and assume X ~ Poisson 
, where ? is the mean number of events that occur in one unit of time or space. Assume X is large, so that 
. Follow steps (a) through (d) to derive a level 100(1 – ?)% confidence interval for ? . Then in part (e), you are asked to apply the result found in part (d).
a. Show that for a proportion 1 – ? of all possible samples,
b.
c. Conclude that for a proportion 1 – ? of all possible samples 
d. Use the fact that 
to derive an expression for the level 100(1 – ?)% confidence interval for ? .
e. A 5 mL sample of a certain suspension is found to contain 300 particles. Let ? represent the mean number of particles per mL in the suspension. Find a 95% confidence interval for ?.
A straightedge and feeler gauge are used to measure _____.
A. clearances B. warpage C. runnout D. endplay
Which of the following is another way of saying power divider?
A. controlled traction differential B. interaxle differential C. two-speed differential D. three-speed differential