Business Statistics For Contemporary Decision Making 3rd Canadian Edition Ken Black, Ignacio Castillo - Solutions

A recent study found that 30% of the travelling public said that their flight selections are influenced by perceptions of airline safety. Thirty-nine percent of the travelling public want to know the age of the aircraft. Suppose 87% of the travelling public who say that their flight selections are
Statistics Canada states that 90% of all Canadian households have energy-saving lights. In addition, 40% of all Canadian households have a truck, van, or sport utility vehicle (SUV). Suppose 38% of all Canadian households have both energy-saving lights and a truck/van/SUV. A Canadian household is
Use the values in the contingency table to solve the equations given.a. P(G | A) = _____b. P(B | F) = _____c. P(C | E) = _____d. P(E | G) = _____ E F A 15 12 B 11 17 C 21 32 D 18 13 G 00 8 19 27 12
With the advent of online ordering, shipping has become more important to consumers. One survey showed that 80% of online consumers want same-day shipping. Another study showed that 24% of online consumers are shopping lovers who enjoy buying and purchase often. Suppose that 61% of online consumers
According to a survey of restaurant owners in the United States by Must-Have Menus, 77% of restaurant owners believe that they need to use social media as a marketing tool. A different survey by national restaurant owners revealed that 80% of restaurant owners started their who started their
Alex, Natasha, and Juan fill orders in a fast-food restaurant. Alex incorrectly fills 20% of the orders he takes. Natasha incorrectly fills 12% of the orders she takes. Juan incorrectly fills 5% of the orders he takes. Alex fills 30% of all orders, Natasha fills 45% of all orders, and Juan fills
In a small town, two lawn companies fertilize lawns during the summer. Maritime Lawn Service has 72% of the market. Thirty percent of the lawns fertilized by Maritime could be rated as very healthy one month after service. Greenchem has the other 28% of the market. Twenty percent of the lawns
Use the values in the contingency table to solve the equations given.a. P(E) = ____b. P(B ∪ D) = ____c. P(A ∩ E) = ____d. P(B | E) = ____e. P(A ∪ B) = ____f. P(B ∩ C) = ____g. P(D | C) = ____h. P(A | B) = ____ Variable 2 A B с Variable 1 E 20 D 10 10 15 30 5 15 сл
The following probability matrix contains a breakdown on the age and gender of physicians in a large city in a recent year.a. What is the probability that one randomly selected physician is 35–44 years old?b. What is the probability that one randomly selected physician is both female and 45–54
Suppose that a survey of small companies showed that 42% offer retirement plans, 61% offer life insurance, and 33% offer both retirement plans and life insurance as benefits. If a small company is randomly selected, determine the following probabilities:a. The company offers a retirement plan given
A survey was conducted for a TV network to understand what viewers consider to be the most important thing in their lives. Twenty-nine percent said “good health,” 21% responded “a happy marriage,” and 40% replied “a happy family.” Because they were asked which of these things is the
A survey by the Arthur Andersen Enterprise Group/National Small Business United attempted to determine what the leading challenges are for the growth and survival of small businesses. Although the economy and finding qualified workers were the leading challenges, several others were listed in the
In a survey, 2,400 cable company subscribers were asked to share their complaints about the cable service. The number one complaint was the time to get through to a customer representative, with 17% of the participating consumers selecting it. Several other complaints were noted including impolite
A small independent physicians’ practice has three doctors. Dr. Khan sees 41% of the patients, Dr. Chan sees 32%, and Dr. Jackson sees the rest. Dr. Khan requests blood tests on 5% of her patients, Dr. Chan requests blood tests on 8% of his patients, and Dr. Jackson requests blood tests on 6% of
The Steelcase Workplace Index studied the types of work-related activities that employees did while on vacation in the summer. Among other things, 40% read work-related material. Thirty-four percent checked in with the boss. Respondents to the study were allowed to select more than one activity.
A telephone survey conducted by the Maritz Marketing Research company found that 43% of those interviewed expect to save more money next year than they saved last year. Forty-five percent of those surveyed plan to reduce debt next year. Of those who expect to save more money next year, 81% plan to
A recent survey revealed that about 25% of households have only a cellphone (no land line); additionally, 65% of households have highspeed Internet. Suppose of the households having only a cellphone, 80% have high-speed Internet. A household is randomly selected.a. What is the probability that the

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