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Question: Survey questions. Examine each of the following questions for possible bias. If you think the question is biased, indicate how and propose a better question.
a) Should companies that pollute the environment be compelled to pay the costs of cleanup?
b) Given that 18-year-olds are old enough to vote and to serve in the military, is it fair to set the drinking age at 21?
What are the possible consequences of errors associated with these duties? How frequently are these duties performed? How do they relate when compared with other duties?
At the 5% significance level, can the researcher reject the hypothesis that the mean reading scores of all children in the three school systems is the same? Formulate and test the appropriate hypotheses. Use the critical value approach.
Production of the three machines one article is selected at random. if it found that this article is defective, what is the probability that it was manufactured by machine X?
is the accounting system the same for a merchandising business and a service business?
The national median sales price for new single-family homes is $230,000 (The Associated Press, March 25, 2006). Assume that the following data were obtained for sales of existing single-family homes in Houston and Boston.
We then counted the number of statements in the summary that can be classed as inferences. Assume inferences are interval measurement.
Assuming the standard deviation between individual cars is 2.3 miles per gallon, what should the researchers conclude if the sample mean is 49 miles per gallon?
If the mean and trimmed mean are nearly identical, it might be thought that it makes little difference which measure of location is used. Based on your answer to the previous problem, why might it make a difference?
A college believes that 28% of applicants to that school have parents who have remarried. How large a sample is needed to estimate the true proportion of students who have parents who have remarried to within 5 percentage points with 95% confidenc..
Fifty people are surveyed about whether they cut the tags off their T-shirts.- What is the population of interest, the sample, and the variable in this problem? Write a Solution Trail for this problem.
Hotels often overbook reservations, counting on the fact that some people will cancel at the last minute. A certain hotel chain finds that 80% of the reservations will be used. If we randomly select 15 reservations what is the probability that mor..
Using the 0.01 significance level, can we conclude that there is a positive correlation between the variables?
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