Questions and Answers of Business Statistics In Practice

According to Statistics Canada (for 2017), 60% of all Canadian households have an air conditioner and 81% have trees on their property. 5 Suppose 91% of all Canadian households with an air
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
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
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
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
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
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
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) =
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
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
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
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
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%
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,
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
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
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,

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