A Bloomberg Businessweek North American subscriber study collected data from a sample of 2861 subscribers. Fifty-nine percent of the respondents indicated an annual income of $75,000 or more and 50%...

A basketball player is fouled while attempting to make a basket and receives two free throws. The opposing coach believes there is a 55% chance that the player will miss both shots, a 25% chance that...

At four community health centers on Cape Cod, Massachusetts, 15,164 patients were asked to respond to questions designed to detect depression (The Boston Globe, June 11, 2008). The survey produced...

For SKU A3510 at the Hardware Warehouse, the order quantity has been set at 150 units each time an order is placed. The daily demand is normally distributed, with a mean of 12 units and a standard...

The Toyota Camry is one of the best-selling cars in North America. The cost of a previously owned Camry depends upon many factors, including the model year, mileage, and condition. To investigate the...

Let P(t) be the percentage of Americans under the age of 18 at 3 x time . The table gives values of this function in census years from 1950 to 2000. (a) What is the meaning of P (t)? What are its...

In The Effect of Nozzle Design on the Stability and Performance of Turbulent Water Jets (Fire Safety Journal, Vol. 4, August 1981), C. Theobald describes an experiment in which a shape measurement...

The yearly data have been published showing the number of releases for each of the commercial movie studios and the gross receipts for those studios thus far. Based on these data, can it be concluded...

The data shown in Table 6E.4 are the deviations from nominal diameter for holes drilled din a carbon-fiber composite material used in aerospace manufacturing. The values reported are deviations from...

Raptor Fuels produces three grades of gasoline Regular, Premium, and Super. All of these are produced by blending two types of crude oil Crude A and Crude B. The two types of crude contain specific...

Listed are the weights of the NBAs top 50 players. Construct a grouped frequency distribution and a cumulative frequency distribution with 8 classes. Analyze the results in terms of peaks, extreme...

East Coast Trucking provides service from Boston to Miami using regional offices located in Boston, New York, Philadelphia, Baltimore, Washington, Richmond, Raleigh, Florence, Savannah, Jacksonville,...

The graph of f is shown. Evaluate each integral by interpreting it in terms of areas. (b) ) dx y=f(x) 6. 8.

Floyd's Bumpers pays a transportation company to ship its product in full truckloads to its customers. Therefore, the cost for shipping is a function of the distance traveled and a fuel surcharge...

CarpetPlus sells and installs floor covering for commercial buildings. Brad Sweeney, a CarpetPlus account executive, was just awarded the contract for five jobs. Brad must now assign a CarpetPlus...

The following cumulative frequency polygon shows the selling price ($000) of houses sold in the Billings, Montana, area. a. How many homes were studied? b. What is the class interval? c. One hundred...

DJS Investment Services must develop an investment portfolio for a new client. As an initial investment strategy, the new client would like to restrict the portfolio to a mix of two stocks: The...

A grocery store has n watermelons to sell and makes $1.00 on each sale. Say the number of consumers of these watermelons is a random variable with a distribution that can be approximated by A pdf of...

The burning rates of two different solid-fuel propellants used in aircrew escape systems are being studied. It is known that both propellants have approximately the same standard deviation of burning...

Morgan Trucking Company operates a special pickup and delivery service between Chicago and six other cities located in a four-state area. When Morgan receives a request for service, it dispatches a...

A bottled water distributor wants to estimate the amount of water contained in 1 gallon bottles purchased from a nationally known water bottling company. The water bottling companys specifications...

Innis Construction Company specializes in building moderately priced homes in Cincinnati, Ohio. Tom Innis has identified eight potential locations to construct new single-family dwellings, but he...

Assume that a production line operates such that the production lot size model of Section 14.2 is applicable. Given D = 6400 units per year, Co = $100 and Ch = $2 per unit per year, compute the...

After six months of study, much political arm wrestling, and some serious financial analysis, Dr. Martin Starr, president of Southwestern University, had reached a decision. To the delight of its...

The mathematical relationships that follow were formulated by an operations research analyst at the Smith-Lawton Chemical Company. Which ones are invalid for use in an LP problem, andwhy? Maximize...

Two tire-quality experts examine stacks of tires and assign quality ratings to each tire on a 3-point scale. Let X denote the grade given by expert A and Y denote the grade given by B. The following...

In a certain state lottery, a lottery ticket costs $2. In terms of the decision to purchase or not to purchase a lottery ticket, suppose that the following payoff table applies: a. A realistic...

Aggie Power Generation supplies electrical power to residential customers for many U.S. cities. Its main power generation plants are located in Los Angeles, Tulsa, and Seattle. The following table...

Oil Co is building a refinery to produce four products: diesel, gasoline, lubricants, and jet fuel. The minimum demand (in bbl/day) for each of these products is 14,000,30,000, 10,000, and 8,000,...

According to the published reports, practice under fatigued conditions distorts mechanisms which govern performance. An experiment was conducted using 15 college males who were trained to make a...

Consider the following linear program: Min8X + 12Y s.t. 1X + 3Y 9 2X + 2Y 10 6X + 2Y 18 X, Y 0 a. Use the graphical solution procedure to find the optimal solution. b. Assume that the objective...

The following chart reports the number of cell phones sold at Radio Shack for the last 26 days. a. What are the maximum and the minimum numbers of cell phones sold in a day? b. What is a typical...

High school seniors with strong academic records apply to the nations most selective colleges in greater numbers each year. Because the number of slots remains relatively stable, some colleges reject...

Three decision makers have assessed utilities for the following decision problem (payoff test in dollars): The indifference probabilities are as follows: a. Plot the utility function for money for...

Steve Caples, a real estate appraiser in Lake Charles, Louisiana, has developed a regression model to help appraise residential housing in the Lake Charles area. The model was developed using...

The contingency table below summarizes a survey of 1,000 bottled beverage consumers. Find the following probabilities or percentages: a. Probability that a consumer recycles beverage bottles. b....

An individual wishes to invest $5000 over the next year in two types of investment: Investment A yields 5% and investment B yields 8%. Market research recommends an allocation of at least 25% in A...

EZ-Windows, Inc., manufactures replacement windows for the home remodeling business. In January, the company produced 15,000 windows and ended the month with 9000 windows in inventory. EZ-Windows...

Sudoku puzzles have become very popular in recent years; 31.1% of members of house-holds with annual income of at least $100,000 worked Sudoku puzzles in 2012 (Statistica.com, March 10, 2013). Are...

Factory workers are constantly encouraged to practice zero tolerance when it comes to accidents in factories. Accidents can occur because the working environment or conditions themselves are unsafe....

The Chartered Financial Analyst (CFA) Institute reported that 49% of its U. S. members indicate that lack of ethical culture within financial firms has contributed the most to the lack of trust in...

In an attempt to assess total daily travel taxes in various cities, the Global Business Travel Association conducted a study of daily travel taxes on lodging, rental cars, and meals (GBTA Foundation...

According to the web site www.torchmate.com, manhole covers must be a minimum of 22 in. in diameter, but can be as much as 60 in. in diameter. Assume that a manhole is constructed to have a circular...

A cellphone provider has the business objective of wanting to estimate the proportion of subscribers who would upgrade to a new cellphone with improved features if it were made available at a...

David Wise handles his own investment portfolio, and has done so for many years. Listed below is the holding time (recorded to the nearest whole year) between purchase and sale for his collection of...

Passenger miles flown on Northeast Airlines, a commuter firm serving the Boston hub, are as follows for the past 12 weeks: (a) Assuming an initial forecast for week 1 of 17,000 miles, use exponential...

Develop a four-month moving average forecast for Wallace Garden Supply and compute the MAD. A three-month moving average forecast was developed in the section on moving averages in Table5.3. MONTH...

Costs are rising for all kinds of medical care. The mean monthly rent at assisted-living facilities was reported to have increased 17% over the last five years to $3,486 (The Wall Street Journal...

The file taxdata contains information from federal tax returns filed in 2007 for all counties in the United States (3,142 counties in total). Create a PivotTable in Excel to answer the following...

TJs, Inc., makes three nut mixes for sale to grocery chains located in the Southeast. The three mixes, referred to as the Regular Mix, the Deluxe Mix, and the Holiday Mix, are made by mixing...

A study examined waiting times in the X-ray department for a hospital in Jacksonville, Florida. A clerk recorded the number of patients waiting for service at 9:00 A.M. on 20 consecutive days and...

The following are six observations collected from treatment 1, four observations collected from treatment 2, and five observations collected from treatment 3. Test the hypothesis at the .05...

Giuliana is having one wall of her den covered in brick. She needs to find the area of the wall, excluding the doors and the windows. A diagram of the room is shown. a. Giuliana creates a scale...

A manufacturer of game controllers is concerned that their controller may be difficult for left-handed users. They set out to find lefties to test. About 13 % of the population is left-handed. If...

The Wayne Manufacturing Company purchases a certain part from suppliers A, B, and C. Supplier A supplies 60% of the parts, B 30%, and C 10%. The quality of parts varies among the suppliers, with A,...

A survey of 545 college students asked: What is your favorite winter sport? And, what type of college do you attend? The results are summarized below: Using these 545 students as the sample, a...

An inspector working for a manufacturing company has a 99% chance of correctly identifying defective items and a 0.5% chance of incorrectly classifying a good item as defective. The company has...

a. Use the random numbers 0.3753, 0.9218, 0.0336, 0.5145, and 0.7000 to generate five simulated values for the PortaCom direct labor cost per unit. b. Use the random numbers 0.6221, 0.3418, 0.1402,...

Cress Electronic Products manufactures components used in the automotive industry. Cress purchases parts for use in its manufacturing operation from a variety of different suppliers. One particular...

Games for the iPad have a distribution of prices that is skewed to the high end. a) Explain why this is what you would expect. b) Members of the iPad gamers club each own about 50 games. Pat is one...

When a chip fabrication facility is operating normally, the lifetime of a microchip operated at temperature T, measured in degrees Celsius, is given by an exponential () random variable X with...

A manufacturer is interested in the output voltage of a power supply used in a PC. Output voltage is assumed to be normally distributed, with standard deviation 0.25 Volts, and the manufacturer...

A candy company taste tested two chocolate bars, one with almonds and one without almonds. A panel of testers rated the bars on a scale of 0 to 5, with 5 indicating the highest taste rating. If the...

If the ROP is greater than the order quantity, explain how the ROP is implemented. Can the ROP be more than twice the order quantity and, if so, how is such a situation handled?

The Stefan-Boltzmann law can be employed to estimate the rate of radiation of energy H from a surface, as in H = A e T 4. Where H is in watts, A = the surface area (m 2 ), e = emissivity that...

Use the Gauss-Seidel method (a) Without relaxation and (b) With relaxation ( = 0.95) to solve the following system to a tolerance of S = 5%. If necessary, rearrange the equations to achieve...

A new car battery is sold with a two-year warranty whereby the owner gets the battery replaced free of cost if it breaks down during the warranty period. Suppose an auto store makes a net profit of...

The latest available data showed health expenditures were $8,086 per person in the United States or 17.6% of gross domestic product (Centers for Medicare & Medicaid Services website, April 1, 2012)....

Dr. Miriam Johnson has been teaching accounting for over 20 years. From her experience she knows that 60% of her students do homework regularly. Moreover, 95% of the students who do their homework...

Refer to the Buena School District bus data. a. Suppose we consider a bus old if it has been in service more than 8 years. At the .01 significance level, can we conclude that less than 40% of the...

The following data represent the total compensation for 10 randomly selected chief executive ofcers (CEO) and the companys stock performance in 2009. Based on the analysis from Problem 31 in Section...

Zagats publishes restaurant ratings for various locations in the United States. The file Restaurants contains the Zagat rating for food, dcor, service, and the cost per person for a sample of 100...

A manufacturer knows that on the average 20% of the electric toasters which lie makes will require repairs within 1 year after they are sold. When 20 toasters are randomly selected, find appropriate...

Katherine DAnn, from Problem 1-18, has become concerned that sales may fall, as the team is on a terrible losing streak, and attendance has fallen off. In fact, Katherine believes that she will sell...

Some have argued that throwing darts at the stock pages to decide which companies to invest in could be a successful stock-picking strategy. Suppose a researcher decides to test this theory and...

In the original Gorman Construction Company problem, we found the shortest distance from the office (node 1) to the construction site located at node 6. Because some of the roads are highways and...

Sales of Cool-Man air conditioners have grown steadily during the past 5 years: YEAR SALES 1 ...........450 2 ...........495 3 ...........518 4 ...........563 5 ...........584 6 ........... ? The...

Trevor Harty, an avid mountain biker, always wanted to start a business selling top-of-the-line mountain bikes and other outdoor supplies. A little over 6 years ago, he and a silent partner opened a...

The data shown represent the number of outdoor drive-in movies in the United States for a 14-year period. Check for normality. 2084 1497 1014 910 899 870 837 859 848 826 815 750 637 737

A contractor, Susan Meyer, has to haul gravel to three building sites. She can purchase as much as 18 tons at a gravel pit in the north of the city and 14 tons at one in the south. She needs 10, 5,...

Zoe Garcia is the manager of a small office support business that supplies copying, binding, and other services for local companies. Zoe must replace a worn-out copy machine that is used for black...

Suppose you are the president of the student government. You wish to conduct a survey to determine the student bodys opinion regarding student services. The administration provides you with a list of...

J.P. Morgan Asset Management publishes information about financial investments. Over the past 10 years, the expected return for the S&P 500 was 5.04% with a standard deviation of 19.45% and the...

The manager of the Oak Hills Swimming Club is planning the clubs swimming team program. The first team practice is scheduled for May 1. The activities, their immediate predecessors, and the activity...

If an asset declines in value from $5,000 to $3,500 over nine years, what is the mean annual growth rate in the assets value over these nine years?

Hanson Inn is a 96-room hotel located near the airport and convention center in Louisville, Kentucky. When a convention or a special event is in town, Hanson increases its normal room rates and takes...

Suppose that IBM employs a network of expert analytics consultants for various projects. To help it determine how to distribute its bonuses, IBM wants to form groups of employees with similar...

In a research report by Richard H. Weindruch of the UCLA Medical School, it is claimed that mice with an average life span of 32 months will live to be about 40 months old when 40% of the calories in...

Esiason Oil makes two blends of fuel by mixing oil from three wells, one each in Texas, Oklahoma, and California. The costs and daily availability of the oils are provided in the following table....

A 1992 article in the Journal of the American Medical Association (A Critical Appraisal of 98.6 Degrees F, the Upper Limit of the Normal Body Temperature, and Other Legacies of Carl Reinhold August...

Horizon Wireless, a cellular telephone company, is expanding into a new era. Relay towers are necessary to provide wireless telephone coverage to the different areas of the city. A grid is...

The Future Government Club wants to sponsor a panel discussion on the upcoming national election. The club wants four of its members to lead the panel discussion. Obtain a simple random sample of...

A bottled water distributor wants to determine whether the mean amount of water contained in 1 gallon bottles purchased from a nationally known water bottling company is actually 1 gallon. You know...

A manufacturing company regularly conducts quality control checks at specified periods on the products it manufactures. Historically, the failure rate for LED light bulbs that the company...

Referring to the Texas Lotto situation in Problem 7-20 suppose the investor has changed his attitude about the investment and wishes to give greater emphasis to the risk of the investment, now the...

An economist uses the price of a gallon of milk as a measure of inflation. She finds that the average price is $3.50 per gallon and the population standard deviation is $0.33. You decide to sample 40...

Time Warner Cable provides television and Internet service to over 15 million people (Time Warner Cable website, October 24, 2012). Suppose that the management of Time Warner Cable subjectively...

The Metalco Company desires to blend a new alloy of 40 percent tin, 35 percent zinc, and 25 percent lead from several available alloys having the following properties: The objective is to determine...

If two orders are selected, find the probability that they are both from Taco Bell. a. Assume that the selections are made with replacement. Are the events independent? b. Assume that the selections...

STAR Co. provides paper to smaller companies with volumes that are not large enough to warrant dealing directly with the paper mill. STAR receives 100-feet-wide paper rolls from the mill and cuts the...