Questions from Business Statistics

Q: ABC News reports that 58% of U.S. drivers

ABC News reports that 58% of U.S. drivers admit to speeding. Suppose that a new satellite technology can instantly measure the speed of any vehicle on a U.S. road and determine whether the vehicle is...

Q: A business executive, transferred from Chicago to Atlanta, needs to

A business executive, transferred from Chicago to Atlanta, needs to sell her house in Chicago quickly. The executive’s employer has offered to buy the house for $210,000, but the offer expires at the...

Q: The NCAA estimates that the yearly value of a full athletic scholarship

The NCAA estimates that the yearly value of a full athletic scholarship at in-state public universities is $19,000. Assume the scholarship value is normally distributed with a standard deviation of $2...

Q: People often wait until middle age to worry about having a healthy

People often wait until middle age to worry about having a healthy heart. However, many studies have shown that earlier monitoring of risk factors such as blood pressure can be very beneficial (The Wa...

Q: Motorola used the normal distribution to determine the probability of defects and

Motorola used the normal distribution to determine the probability of defects and the number of defects expected in a production process. Assume a production process produces items with a mean weight...

Q: One indicator of the level of economic hardship is the number of

One indicator of the level of economic hardship is the number of people who bring items to a pawnbroker. Assume that the number of people bringing items to a pawnshop per day in is normally distribute...

Q: An experiment has three steps with three outcomes possible for the first

An experiment has three steps with three outcomes possible for the first step, two outcomes possible for the second step, and four outcomes possible for the third step. How many experimental outcomes...

Q: Consider the following survey results that show smartphone ownership by age.

Consider the following survey results that show smartphone ownership by age. a. Construct a stacked bar chart to display the above survey data on type of mobile phone ownership. Use age category as...

Q: The Northwest regional manager of an outdoor equipment retailer conducted a study

The Northwest regional manager of an outdoor equipment retailer conducted a study to determine how managers at three store locations are using their time. A summary of the results are shown in the fol...

Q: The following data show the year to date percent change (YTD

The following data show the year to date percent change (YTD % Change) for 30 stock-market indexes from around the world (The Wall Street Journal). a. What index has the largest positive YTD % Chang...