Exhibit 20

question 53

Multiple Choice

Exhibit 20.4.Investment institutions usually have funds with different risk vs.reward prospectuses.A trading magazine wants to determine if the returns of high risk funds is greater than low risk funds.The magazine records the return of high and low risk funds for a sample of 22 institutions.For the Wilcoxon signed-rank test,where D = high risk return - low risk return,the value of the test statistic is . Refer to Exhibit 20.4.For the Wilcoxon signed-rank test,the competing hypotheses are:

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Definitions:

Thigmomorphogenesis

The growth and developmental changes in plants that result from mechanical stimulation or touch.

Cytokinins

A class of plant hormones that promote cell division and growth, and delay senescence.

Cut Stem

Involves slicing or trimming the stem of a plant, often as a method of propagation or to remove dead or diseased portions.

Flowering Promoter

A substance or environmental cue that stimulates a plant to transition from vegetative growth to flowering.