Questions from Business Statistics

Q: The survey described in Exercise 29 asked: Many people believe this

The survey described in Exercise 29 asked: Many people believe this playground is too small and in need of repair. Do you think the playground should be repaired and expanded even if that means raisin...

Q: Two members of the PTA committee in Exercises 26 and 27 have

Two members of the PTA committee in Exercises 26 and 27 have proposed different questions to ask in seeking parents opinions. Question 1: Should elementary school age children have to pass high-stakes...

Q: An online poll on a website asked: A nationwide ban

An online poll on a website asked: A nationwide ban of the diet supplement ephedra went into effect recently. The herbal stimulant has been linked to 155 deaths and many more heart attacks and strokes...

Q: Examine each of the following questions for possible bias. If you

Examine each of the following questions for possible bias. If you think the question is biased, indicate how and propose a better question. 1. Should companies that pollute the environment be compelle...

Q: Examine each of the following questions for possible bias. If you

Examine each of the following questions for possible bias. If you think the question is biased, indicate how and propose a better question. 1. Do you think high school students should be required to w...

Q: Any time we conduct a survey, we must take care to

Any time we conduct a survey, we must take care to avoid under coverage. Suppose we plan to select 500 names from the city phone book, call their homes between noon and 4 pm, and interview whoever ans...

Q: What about drawing a random sample only from cell phone exchanges?

What about drawing a random sample only from cell phone exchanges? Discuss the advantages and disadvantages of such a sampling method compared with surveying randomly generated telephone numbers from...

Q: A researcher studies children in elementary school and finds a strong positive

A researcher studies children in elementary school and finds a strong positive linear association between height and reading scores. 1. Does this mean that taller children are generally better readers...

Q: How long is your arm compared with your hand size? Put

How long is your arm compared with your hand size? Put your right thumb at your left shoulder bone, stretch your hand open wide, and extend your hand down your arm. Put your thumb at the place where y...

Q: Occasionally, when I fill my car with gas, I figure

Occasionally, when I fill my car with gas, I figure out how many miles per gallon my car got. I wrote down those results after six fill-ups in the past few months. Overall, it appears my car gets 28.8...