Questions from Business Statistics

Q: Use the test μ ± 3σ to determine whether the following binomial

Use the test μ ± 3σ to determine whether the following binomial distributions can be approximated by using the normal distribution. a) n = 8 and p = .50 b) n = 18 and p = .80 c) n = 12 and p = .30 d)...

Q: Where appropriate, work the following binomial distribution problems by using the

Where appropriate, work the following binomial distribution problems by using the normal curve. Also, use Table A.2 to find the answers by using the binomial distribution and compare the answers obtai...

Q: x is uniformly distributed over a range of values from 8 to

x is uniformly distributed over a range of values from 8 to 21. a) What is the value of f(x) for this distribution? b) Determine the mean and standard deviation of this distribution. c) Probability of...

Q: The Zimmerman Agency conducted a study for Residence Inn by Marriott of

The Zimmerman Agency conducted a study for Residence Inn by Marriott of business travelers who take trips of five nights or more. According to this study, 37% of these travelers enjoy sightseeing more...

Q: One study on managers’ satisfaction with management tools reveals that 59%

One study on managers’ satisfaction with management tools reveals that 59% of all managers use self-directed work teams as a management tool. Suppose 70 managers selected randomly in the United States...

Q: According to the Yankee Group, 53% of all cable households

According to the Yankee Group, 53% of all cable households rate cable companies as good or excellent in quality transmission. Sixty percent of all cable households rate cable companies as good or exce...

Q: Use the probability tables in Table A.2 and sketch the

Use the probability tables in Table A.2 and sketch the graph of each of the following binomial distributions. Note on the graph where the mean of the distribution falls. Table A.2—an...

Q: According to the International Data Corporation, HP is the leading company

According to the International Data Corporation, HP is the leading company in the United States in PC sales with about 23% of the market share. Suppose a business analyst randomly selects 130 recent p...

Q: A study about strategies for competing in the global marketplace states that

A study about strategies for competing in the global marketplace states that 52% of the respondents agreed that companies need to make direct investments in foreign countries. It also states that abou...

Q: Use the probability density formula to sketch the graphs of the following

Use the probability density formula to sketch the graphs of the following exponential distributions. a) λ = 0.1 b) λ = 0.3 c) λ = 0.8 d) λ = 3.0