Are America's top chief executive officers (CEOs) really worth all that money? One way to answer this question is to look at row B, the annual company percentage increase in revenue, versus row A, the CEO's annual percentage salary increase in that same company. Suppose that a random sample of companies yielded the following data:

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Do these data indicate that the population mean percentage increase in corporate revenue (row B) is different from the population mean percentage increase in CEO salary? Assume that the distribution of differences is approximately normal, mound-shaped and symmetric. Use a 5% level of significance. What is the alternate hypothesis?

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What percentage of hospitals provide at least some charity care? Based on a random sample of hospital reports from eastern states, the following information is obtained (units in percentage of hospitals providing at least some charity care):

57.2 56.1 53.1 65.8 59.0 64.7 70.1 64.7 53.5 78.2

Assume that the population of x values has an approximately normal distribution.

(a) Use a calculator with mean and sample standard deviation keys to find the sample mean percentage x and the sample standard deviation s. (Round your answers to one decimal place.)

x = %

s = %

(b) Find a 90% confidence interval for the population average μ of the percentage of hospitals providing at least some charity care. (Round your answers to one decimal place.)

lower limit %

upper limit %

Both Bond Sam and Bond Dave have 9 percent coupons, make semiannual payments, and are priced at par value. Bond Sam has 2 years to maturity, whereas Bond Dave has 12 years to maturity. (Do not round your intermediate calculations.)

Requirement 1: (a) If interest rates suddenly rise by 5 percent, what is the percentage change in the price of Bond Sam?

(b) If interest rates suddenly rise by 5 percent, what is the percentage change in the price of Bond Dave?

Requirement 2: (a) If rates were to suddenly fall by 5 percent instead, what would the percentage change in the price of Bond Sam be then?

(b) If rates were to suddenly fall by 5 percent instead, what would the percentage change in the price of Bond Dave be then?

26. A sample of 1100 computer chips revealed that 62% of the chips fail in the first 1000 hours of their use. The company's promotional literature states that 60% of the chips fail in the first 1000 hours of their use. The quality control manager wants to test the claim that the actual percentage that fail is different from the stated percentage. State the null and alternative hypotheses.

H0:

Ha:

27. A sample of 1100 computer chips revealed that 62% of the chips fail in the first 1000 hours of their use. The company's promotional literature states that 60% of the chips fail in the first 1000 hours of their use. The quality control manager wants to test the claim that the actual percentage that fail is different from the stated percentage. Make the decision to reject or fail to reject the null hypothesis at the 0.10 level.

1. Write a program in C++ to keep statistics for a basketball team consisting of 10 players using parallel arrays. The stats for each player should include the total points, shots attempted, shots made, free throw attempts, free throws made, rebounds, assists, and turnovers. Use functions to perform the following:
   1. Calculate the shooting percentage
   2. Calculate free throw percentage
   3. Print the player's names, shooting percentage, free throw percentage, rebounds, assists, and turnovers. After each player, use "endl" to skip to a new line.

Perform multiple sorts of printing in between sorts. Print a list of player names and total points, sorted from highest to lowest. Next, print a list of player names and rebounds, sorted from highest to lowest.

Linda is a 60-year-old woman with moderate mental retardation who has recently been diagnosed with congestive heart failure. Her doctor has recommended that Linda lose weight, get regular exercise, and eat low sodium, low cholesterol diet. She lives in an adult living facility. Linda works at a local shelter. She is required to bring lunch to the shelter every day and she always brings a bologna and cheese sandwich, a bag of pretzels and a chocolate chip cookie. During her morning break, she always gets a Coke and a bag of potato chips from the vending machine for a snack. Linda has eaten this same diet every day for at least 25 years and is very resistant to the idea of changing what she eats for lunch every day. After work Linda has staff that supports her in cooking dinner and she has tried a variety of foods. On the weekends her favorite thing to do is to go to Burger King for a Whopper with cheese and a large French fries. Linda has support with going grocery shopping. She is willing to pick out a variety of foods, but she always insists on buying pretzels and potato chips. She becomes very angry when staff suggest that she leave the store without the two items. Linda had had no trouble taking medication as she has staff who remind her in the morning and at night that she needs to do this. She also has support with monitoring her weight every day. She must monitor her weight to assure that she is not retaining water. Linda does not get any regular exercise. She has trouble climbing the set of stairs to her second-floor apartment. A couple of weeks ago one of the staff that supports her tried taking her for an hour walk in a near-by park. She had to turn around after 15 minutes because she was exhausted, and declared that she would never go walking again. Linda is fascinated by machines. One of the staff on weekends noted that she watched several infomercials about treadmills, rowing machines, and other types of exercise equipment. What are the behaviors that need to be changed? What health promotion actions would help? What additional supports or information might motivate Linda? Do you believe Linda can follow her doctor's recommendations? Why or why not?

When a sound wave travels directly toward a hard wall, the incoming and reflected waves can combine to produce a standing wave. There is an antinode right at the wall, just as at the end of a closed tube, so the sound near the wall is loud. You are standing beside a brick wall listening to a 80Hz tone from a distant loudspeaker.

How far from the wall must you move to find the first quiet spot? Assume a sound speed of 340 m/s.

The US economy has shrunk 5% due to the impact of the Covid19 pandemic. President Trump has passed a piece of legislation that allows for 5 Trillion dollars to be put back into the economy, through near-zero interest loans for business, and payments of nearly $2,000 for the population. How do you think people will use their $2,000 payment, and why. How do you think industry will use their much larger payments, and why. Comment on short term, and long term application.

• Interest rates are at historic lows in many countries—in some cases, close to zero. How is expansionary monetary policy, or more specifically an open market purchase, supposed to work? How do near-zero interest rates limit the ability of expansionary monetary policy to work?
• In your opinion, how effective has the Australian Government’s policy been as a response to the economic downturn due to the Covid-19 situation? What evidence can you suggest to support your position?