Questions from Business Statistics

Q: The National Vital Statistics Report provides information on live Births (per

The National Vital Statistics Report provides information on live Births (per 1000 women), according to the age of the woman (in 5-year brackets Age used here is the midpoint of the bracket) and the Y...

Q: For a class project, Nick M. designed and carried out

For a class project, Nick M. designed and carried out an experiment to see if the room Temperature and the wearing of Gloves affected his typing speed. He ran each combination of hot and cold temperat...

Q: How accurate are pollsters in predicting the outcomes of Congressional elections?

How accurate are pollsters in predicting the outcomes of Congressional elections? The table shows the actual number of Democrat seats in the House of Representatives and the number predicted by the Ga...

Q: Nick (see Exercise 19) designed a follow-up experiment

Nick (see Exercise 19) designed a follow-up experiment to see if having Music or Television on would affect his typing speed. In particular, he’d like to know if he can type just as...

Q: The New York Times reported the results of the 2003 NY Marathon

The New York Times reported the results of the 2003 NY Marathon by listing time brackets and the number of racers who finished within that bracket. Because the brackets are of different sizes, we look...

Q: Using N(1152,84), the Normal model for weights

Using N(1152,84), the Normal model for weights of Angus steers in Exercise 13 , 1. How many standard deviations from the mean would a steer weighing 1000 pounds be? 2. Which would be more unusual, a s...

Q: Developers of a new math curriculum called Accelerated Math compared performances of

Developers of a new math curriculum called Accelerated Math compared performances of students taught by their system with control groups of students in the same schools who were taught using tradition...

Q: A study published in the journal Environmental Health Perspectives examined the sex

A study published in the journal Environmental Health Perspectives examined the sex ratios of children born to workers exposed to dioxin in Russian pesticide factories. The data covered the years 1961...

Q: A student runs an experiment to test how different factors affect his

A student runs an experiment to test how different factors affect his score while playing video pinball. Here are the results of 16 runs of an experiment performed in random order. Factor Eyes has two...

Q: Brianna, a member of the track team, runs an experiment

Brianna, a member of the track team, runs an experiment to test how different factors affect her javelin throw. She wants to know if the more expensive (premium) javelin is worth the extra price and i...