Questions from Business Statistics

Q: Suppose 70% of all companies are classified as small companies and

Suppose 70% of all companies are classified as small companies and the rest as large companies. Suppose further, 82% of large companies provide training to employees, but only 18% of small companies p...

Q: A list of the top 10 manufacturing companies in the United States

A list of the top 10 manufacturing companies in the United States according to Industry Week along with their total revenue in $ billions follows. Compute the median, Q3, P20, P60, P80, and P93 on the...

Q: Use the values in the cross-tabulation table to solve the

Use the values in the cross-tabulation table to solve the equations given. a) P(E) = _____________ b) P(B ∪ D) = __________ c) P(A ∩ E) = __________ d) P(B|E) = __...

Q: Use the values in the cross-tabulation table to solve the

Use the values in the cross-tabulation table to solve the equations given. a) P(F ∩ A) = __________ b) P(A|B) = ___________ c) P(B) = _____________ d) P(E ∩ F) = _...

Q: The following joint probability table contains a breakdown on the age and

The following joint probability table contains a breakdown on the age and gender of U.S. physicians in a recent year, as reported by the American Medical Association. a) What is the probability that...

Q: Purchasing Survey asked purchasing professionals what sales traits impressed them most in

Purchasing Survey asked purchasing professionals what sales traits impressed them most in a sales representative. Seventy-eight percent selected “thoroughness.” Forty percent responded “knowledge of y...

Q: The U.S. Bureau of Labor Statistics publishes data on

The U.S. Bureau of Labor Statistics publishes data on the benefits offered by small companies to their employees. Only 42% offer retirement plans while 61% offer life insurance. Suppose 33% offer both...

Q: An Adweek Media/Harris Poll revealed that 44% of U

An Adweek Media/Harris Poll revealed that 44% of U.S. adults in the 18–34 years’ category think that “Made in America” ads boost sales. A different Harris Interactive poll showed that 78% of U.S. adul...

Q: In a certain city, 30% of the families have a

In a certain city, 30% of the families have a MasterCard, 20% have an American Express card, and 25% have a Visa card. Eight percent of the families have both a MasterCard and an American Express card...

Q: A few years ago, a survey commissioned by The World Almanac

A few years ago, a survey commissioned by The World Almanac and Maturity News service reported that 51% of the respondents did not believe the Social Security system will be secure in 20 years. Of the...