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Past experience has indicated that the true response rate is 40% when individuals are approached with a request to fill out a questionnaire and return it in a stamped and addressed envelope. An investigator believes that if the person distributing the questionnaire is stigmatized in some obvious way, potential respondents would feel sorry for the distributor and thus tend to respond at a rate higher than 40%. To investigate this theory, a distributor is fitted with an eye patch. Of the 200 questionnaires distributed by this individual, 109 were returned. Does this provide convincing evidence that the response rate in this situation exceeds the rate in the past? State and test the appropriate hypotheses at significance level .05.
suppose a certain species of fawns between 1 and 5 months old have a body weight that is approximately normally
Find the lowest possible score a candidate can score and still qualify. Assume the scores are normally distributed.
Write a 500-word essay explaining why reading, writing and language are an important part of his life inside and outside the classroom. Students should share examples of how they answer the call to service at Union Catholic High School, home or in..
find the diamter of a pipe where p1-p2 is 55 psi and the height rise along the pipe is 60 ft or h2-h1 60 ft the exit
What percent of the children spend over 10 hours per day unsupervised? (Round your answer to four decimal places.)
The average time to complete a particular task is stated to be 150 seconds. Which of the following 95% two-sided confidence intervals on the true average time to complete the task rejects this claim?
Of course, many different kinds of plastic exist. Spend 10 minutes writing down pos- sible ways to recycle one-gallon plastic milk jugs. You can assume that the milk jugs are received rinsed out and reasonably clean, but not sterile. Look at your ..
general population is skewed to the right the mean degree of affection is 60 standard deviation is 16. sample 100
For a national poll on casino visitation, a survey developed by TNS for Harrah's Entertainment was mailed to 100,000 American adults, of whom 57,205.
A sample of n=21 observations is drawn from a normal population with µ=990 and s=220. Find each of the following:
Obtain a number of tables, charts and diagrams used to describe quantitative information. Sources could include, for example, newspaper cuttings, building society pamphlets, textbooks or web search.
Development of objective(s) and research question(s): relevance with respect to the selected data set and Justification of selected statistical methods for analysis.
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