Suggest several areas in your school or community where field research could be used for a research project.

For what reasons would you use participant observation instead of a survey?

Identify the methods of research you would use if you wanted to study the effects of alcoholism on the work force. Explain why you would use this method. Briefly describe how you might conduct the research.

Would you consider the looters in New Orleans following Hurricane Katrina to be a representative sample of the disaster victims? If so, why? If not, why were some news reports presenting them as such?

Provide an example of using precollected data.

Ghostbusters, Inc., exorcises (gets rid of) ghosts. During each of the next three months, the company will receive the following number of calls from people who want their ghosts exorcised: January, 100 calls; February, 300 calls; March, 200 calls. Ghostbusters is paid $800 for each ghost exorcised during the month in which the customer calls. Calls need not be responded to during the month they are made, but if a call is responded to one month after it is made, then Ghostbusters loses$100 in future goodwill, and if a call is responded to two months after it is made, Ghostbusters loses $200 in goodwill. Each employee of Ghostbusters can exorcise 10 ghosts during a month. Each employee is paid a salary of$4,000 per month. At the beginning of January, the company has 8 workers. Workers can be hired and trained (in 0 time) at a cost of $5,000 per worker. Workers can be fired at a cost of$4,000 per worker. Formulate an LP to maximize Ghostbusters’ profit (revenue less costs) over the next three months. Assume that all calls must be handled by the end of March.

Quick Write: Use Vivid Language Choose an event discussed in this section. In one or two paragraphs, retell a portion of the event. Be sure to use vivid language and include details. Do additional research if needed.

Use the following steps. Choose a number. Multiply by 5. Add 2. Multiply by 3. Subtract 8. a. Choose the number 4. What ending number did you get?
b. Choose the variable $x$. What ending expression did you get?

A grating has exactly 8000 slits uniformly spaced over 2.54 cm and is illuminated by light from a mercury vapor discharge lamp. What is the expected angle for the third-order maximum of the green line ($\lambda = 546 \mathrm { nm }$)?

Kerosene, a common space-heater fuel, is a mixture of hydrocarbons whose "average" formula is C12H26.

Write a balanced equation, using the simplest whole-number coefficients, for the complete combustion of kerosene to gases.

Determine whether each argument is valid or invalid. All A are B, no C are B, and all D are C. Thus , no A are D.

Sparks will occur between the plates of an air-filled capacitor at a lower voltage when the air is humid than when it is dry. Discuss why, considering the polar character of water molecules

In each part, is the given function continuous on the interval

$$[ 0 , \pi / 2 )$$

? (a) sin x, (b) cos x, (c) tan x, (d) csc x

Differentiate the series

$$E(x)=\sum_{n=0}^{\infty} \frac{x^{n}}{n !}$$

term-by-term to show that E(x) is equal to its derivative.