Questions from Business Statistics

Q: Here are some summary statistics to go with the histogram of the

Here are some summary statistics to go with the histogram of the ZIP codes of 500 customers from the Holes-R-Us Internet Jewelry Salon that we saw in Exercise 81: What can these statistics tell you ab...

Q: As noted in an earlier chapter, Mars Inc. says that

As noted in an earlier chapter, Mars Inc. says that until very recently yellow candies made up 20% of its milk chocolate M&M red another 20%, and orange, blue, and green 10% each. The rest are brown....

Q: A company says its premium mixture of nuts contains 10% Brazil

A company says its premium mixture of nuts contains 10% Brazil nuts, 20% cashews, 20% almonds, and 10% hazelnuts, and the rest are peanuts. You buy a large can and separate the various kinds of nuts....

Q: A salesman who is on the road visiting clients thinks that,

A salesman who is on the road visiting clients thinks that, on average, he drives the same distance each day of the week. He keeps track of his mileage for several weeks and discovers that he averages...

Q: Census data for New York City indicate that 29.2%

Census data for New York City indicate that 29.2% of the under-18 population is white, 28.2% black, 31.5% Latino, 9.1% Asian, and 2% other ethnicities. The New York Civil Liberties Union points out th...

Q: In its study When Men Murder Women: An Analysis of 2009

In its study When Men Murder Women: An Analysis of 2009 Homicide Data, 2011, the Violence Policy Center (www.vpc.org) reported that 1818 women were murdered by men in 2009. Of these victims, a weapon...

Q: Offspring of certain fruit flies may have yellow or ebony bodies and

Offspring of certain fruit flies may have yellow or ebony bodies and normal wings or short wings. Genetic theory predicts that these traits will appear in the ratio 9:3:3:1 (9 yellow, normal: 3 yellow...

Q: Many people know the mathematical constant is approximately 3.14.

Many people know the mathematical constant is approximately 3.14. But that not exact. To be more precise, here are 20 decimal places: 3.14159265358979323846. Still not exact, though. In fact, the actu...

Q: The National Hurricane Center provides data that list the numbers of large

The National Hurricane Center provides data that list the numbers of large (category 3, 4, or 5) hurricanes that have struck the United States, by decade since 1851 (www.nhc.noaa.gov/dcmi.shtml). The...

Q: The fairness of the South African lottery was recently challenged by one

The fairness of the South African lottery was recently challenged by one of the country political parties. The lottery publishes historical statistics at its website (www.nationallottery.co.za). Here...