In an article in the Journal of Advertising, Weinberger and Spotts compare the use of humor in television ads in the United States and the United Kingdom. They found that a substantially greater percentage of U.K. ads use humor.

Do the confidence intervals you computed in parts $a$ and $b$ suggest that a greater percentage of U.K. ads use humor? Explain. How might an ad agency use this information?

In an article in the Journal of Advertising, Weinberger and Spotts compare the use of humor in television ads in the United States and the United Kingdom. They found that a substantially greater percentage of U.K. ads use humor.

Suppose that a random sample of $400$ television ads in the United Kingdom reveals that $142$ of these ads use humor. Find a point estimate of and a $95$ percent confidence interval for the proportion of all U.K. television ads that use humor.

In an article in the Journal of Advertising, Weinberger and Spotts compare the use of humor in television ads in the United States and in the United Kingdom. Suppose that independent random samples of television ads are taken in the two countries. A random sample of $400$ television ads in the United Kingdom reveals that $142$ use humor, while a random sample of $500$ television ads in the United States reveals that $122$ use humor.

Calculate a $95$ percent confidence interval for the difference between the proportion of U.K. ads using humor and the proportion of U.S. ads using humor. Interpret this interval. Can we be $95$ percent confident that the proportion of U.K. ads using humor is greater than the proportion of U.S. ads using humor?

A dealer in a certain brand of electronic calculator finds that (within certain limits) the number of calculators she can sell per week is given by f(p, t)=-p+6t-.02pt, where p is the price of the calculator and t is the number of dollars spent on advertising. Compute $\frac{\partial f}{\partial p}(25,10,000)$ and $\frac{\partial f}{\partial t}(25,10,000)$, and interpret these numbers.

A rectangular banner advertising a homecoming dance is 8 feet long and 6 feet wide. The committee wants to increase visibility by making the banner larger. If each dimension is increased by the same number of feet, the area $b f$ the new rectangle formed is 32 square feet more than the area of the original rectangle. By how many feet was each dimension increased?

When it comes to advertising, “’tweens” are not ready for the hard-line messages that advertisers often use to reach teenagers. The Geppeto Group study found that 78% of ’tweens understand and enjoy ads that are silly in nature. Suppose that the study involved n = 1030 ’tweens. Construct a 90% confidence interval for the proportion of ’tweens who understand and enjoy ads that are silly in nature.

An animal shelter needs to find homes for 40 dogs and 60 cats. If 15% of the dogs are female and 25% of the cats are female, what percent of the animals are female? A. 21% B. 22% C. 40% D. 42%

Most of the following sentences contain an error in agreement. If a sentence contains an error, identify the incorrect verb or pronoun and supply the correct form. If a sentence is already correct, write C.

Example: Do you know where my binoculars is? I would like to take it with me on the nature hike. is are; it-them.

Public relations and advertising is exciting but often stressful work.

A financial services firm interviewed 3 candidates for the position of senior-level investment banker. Expenses were: advertising $12,500, interviewing expenses$3,890, moving expenses $15,000, 6% realtor's fee on the selling price of a$348,000 home, and a 30% finder's fee. The firm decided to hire Jane McNally at a salary of $388,500. What was the total recruiting cost?

Research the ownership of radio stations in a nearby metropolitan area. Are any owned by the same company? Do the stations have the same types of broadcasts or the same advertising? Write a one- to two-page paper about your findings. In your paper, explain why a company would want to own multiple stations in the same geographical market.

The profit P(x) of a cosmetics company, in thousands of dollars, is given by $P(x)=-5 x^{2}+400 x-2550$, where x is the amount spent on advertising in thousands of dollars. a) Calculate the average rate of change in profit on the interval $8 \leq x \leq 10$. b) Estimate the instantaneous rate of change in profit when x = 50. c) Discuss the significance of the signs in your answers to parts a) and b).

A company is willing to renew its advertising contract with a local radio station only if the station can prove that more than $20 \%$ of the residents of the city have heard the ad and recognize the company's product. The company contacts 600 people chosen at random, and 133 can remember the ad.

d) Describe carefully what your $P$-value means in this context.

At a marine animal park, Alison is looking through a glass window and watching dolphins swim underwater. If the dolphin is swimming directly toward her at 15 m/s, how fast does the dolphin appear to be moving?

A financial services firm searched and found a new corporate fiscal officer. Expenses were: advertising $15,300, interviewing$4,340, moving expenses $22,000, and a 5% realtor's fee on the selling price of a$375,000 home. They hired Jolon Hena at a salary of $475,000 and paid 25% of first year salary as a finder's fee. What was the total recruiting cost?