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Question: In each of the following situations, indicate whether the potential bias is a selection bias, a nonparticipation bias, or a response bias.
a. A survey question asked of unmarried men was, "What is the most important feature you consider when deciding whether to date somebody?" The results were found to depend on whether the interviewer was male or female.
b. In a study of women's opinions about community issues, investigators randomly selected a sample of households and interviewed a woman from each selected household. When no woman was present in a selected household, a next-door neighbor was interviewed instead. The survey was done during daytime hours, so working women might have been disproportionately missed.
c. A telephone survey of 500 residences was conducted. People refused to talk to the interviewer in 200 of the residences.
A new product has the following profit projections, associated probabilities, and indifference probability:
Estimate a probability that a seed from new plant will germinate a random sample of 3000 seeds, of those seeds 2430 germinated. What is the sample space for this problem and does it add up tp 1? are the outcome in the sample space equally likely?
A professor gives a test consisting of six multiple choice questions, each offering four answers from which to choose.
Estimate the true weight with an error of 0.03 grams with 99 percent confidence? How to construct a 95 percent confidence interval for the population proportion of positive drug tests. How to tell if the normality distribution?
What is the probability of selecting a store at random and finding it has both a pharmacy and a floral shop?
question five factories reported the following numbers of minor accidents in a year.factory12345number of
1.a simple random sample of 1000 americans found that 61 were satisfied with the service provided by the dealer from
What percent of the investment firm's potential market sees and remembers the advertisement? What percent of the investment firm's potential market sees, but does not remember the advertisement?
in a group of 15 batteries 6 are dead. you chose 2 at random. the expected number of good batteries is 1.2. what is the
She decides to study the effect of each catalyst on each material for 5 days (1, 2, 3, 4, 5). Construct a Latin square design for this experiment.
How can you tell what are the solutions of a quadratic equation by looking at its graph? Explain.
a bicycle factory runs two assembly lines a and b. 97 of line as products pass inspection and 89 of line bs products
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