Questions from Business Statistics

Q: Although airline schedules and cost are important factors for business travelers when

Although airline schedules and cost are important factors for business travelers when choosing an airline carrier, a USA Today survey found that business travelers list an airline’s frequent flyer pro...

Q: Huston Systems Private Limited reports that smart traffic signals and signs can

Huston Systems Private Limited reports that smart traffic signals and signs can measure a passing vehicle’s speed. Consider the speeds of 15,717 vehicles collected as they passed 35 MPH speed limit si...

Q: A recent survey from PayScale found that 46% of U.

A recent survey from PayScale found that 46% of U.S. workers— roughly 22 million—are underemployed, either working part-time or at jobs that don’t allow them to use their education or skills. Suppose...

Q: According to CNN, 55% of all U.S.

According to CNN, 55% of all U.S. smartphone users have used their GPS capability to get directions. Suppose a major provider of wireless telephone service in Canada wants to know how GPS usage by its...

Q: In 2017, 42.54% of the nearly 2.

In 2017, 42.54% of the nearly 2.7 million reports taken nationwide by the Federal Trade Commission’s Consumer Sentinel Network dealt with instances of fraud. Consider results of a random sample of 42,...

Q: The Infrastructure Report Card (IRC) reports that of 614,

The Infrastructure Report Card (IRC) reports that of 614,387 U.S. bridges, 9.1% were structurally deficient as of last year. The IRC also reports that more than 1300 California bridges fall under this...

Q: SmartAsset reports that the average weekly earnings for workers who have not

SmartAsset reports that the average weekly earnings for workers who have not received a high school diploma is $493 in 2018. Suppose you would like to determine if the average weekly earnings for work...

Q: The chamber of commerce of a Florida Gulf Coast community advertises that

The chamber of commerce of a Florida Gulf Coast community advertises that area residential property is available at a mean cost of $125,000 or less per lot. Suppose a sample of 32 properties provided...

Q: According to the the National Association of Realtors, it took an

According to the the National Association of Realtors, it took an average of three weeks to sell a home in 2017. Data for the sale of 40 randomly selected homes sold in Greene County, Ohio, in 2017 sh...

Q: According to Expedia, 52% of Americans report that they generally

According to Expedia, 52% of Americans report that they generally can sleep during flights. Are people who fly frequently more likely to be able to sleep during flights? Suppose we have a random sampl...