Which forest biome has the richest soil type?

What is the main objective to wind power from a biodiversity approach?

Light-emitting diodes (LEDS) and compact Light-emitting diodes (LEDS) and compact to fifty times longer than old fashioned incandescent lightbulbs and also use less energy. Consumer Reports sampled eighteen different 60-watt LED and CFL lightbulbs. The following table lists their brightness, in lumens. Use the technology of your choice to decide whether applying the z-interval procedure to these data is reasonable. Explain your answer.

$$\begin{array}{llllll} \hline & & & & & \\ 900 & 690 & 910 & 745 & 765 & 820 \\ 700 & 360 & 925 & 805 & 850 & 730 \\ 865 & 680 & 750 & 735 & 865 & 635 \\ \hline \end{array}$$

What is “the tragedy of the commons,” and how can it be avoided? Give an example.

Why did the Dutch baroque movement differ from baroque movements in France, Spain, and Italy?

a) Dutch artists used different techniques.

b) The Dutch were protestant and their art did not focus on the Church.

c) The Dutch baroque style was similar to late Renaissance art.

In 1970, 59% of college freshmen thought that capital punishment should be abolished; by 2005, the percentage had dropped to 35%. Is the difference real, or can it be explained by chance? You may assume that the percentages are based on two independent simple random samples, each of size 1,000.

Among freshman at a certain university, scores on the Math SAT followed the normal curve, with an average of 550 and an SD of 100. Fill in the blanks; explain briefly. a) A student who scored 400 on the Math SAT was at the ______ th percentile of the score distribution. b) To be at the 75th percentile of the distribution, a student needed a score of about ______ points on the Math SAT.

Discuss ways to distinguish whether a particular form of cancer involves an inherited predisposition or is due strictly to (postzygotic) somatic mutations. In your answer, consider that only one mutation may be inherited, but cancer might develop only after several somatic mutations.

A forest contains about 500 trees. You randomly pick 67 trees and find that 27 of them are oaks. b. Predict how many oak trees there are in the forest.

Determine whether the events are mutually exclusive or not mutually exclusive. Then find the probability. Round to the nearest tenth of a percent if necessary.

Rolling a pair of dice and doubles or a sum of 6 is rolled

Suppose that trees are distributed in a forest according to a two-dimensional Poisson process with parameter $\alpha$, the expected number of trees per acre, equal to 80. a. What is the probability that in a certain quarter-acre plot, there will be at most 16 trees? b. If the forest covers 85,000 acres, what is the expected number of trees in the forest? c. Suppose you select a point in the forest and construct a circle of radius .1 mile. Let X=the number of trees within that circular region. What is the pmf of X? [Hint: 1 sq mile=640 acres.]

Automobile unit sales at B. J. Scott Motors, Inc., provided the following 10-year time series.

a. Construct a time series plot. Comment on the appropriateness of a linear trend.

b. Using Minitab or Excel, develop a quadratic trend equation that can be used to forecast sales.

c. Using the trend equation developed in part (b), forecast sales in year 11.

d. Suggest an alternative to using a quadratic trend equation to forecast sales. Explain.

Pine trees grow throughout a large tract of forest. Suppose a highway is built through the forest, effectively dividing it in half. Is it likely that the two groups of pine trees will evolve separately? Explain your prediction.

If $P (A) = 0.3$, $P (B) = 0.4$, and $P (A\ \text{or}\ B) = 0.7$, are $A$ and $B$ mutually exclusive?