Question: A random sample of 1 202 British Columbia residents was given
A random sample of 1,202 British Columbia residents was given a list of several approaches for retailers to deal with plastic bags. Of those surveyed, 469 said that retailers should provide biodegradable plastic bags to consumers, at no charge. The survey was reported as accurate to within 2.9%, 19 times out of 20. What confidence interval can you construct from these results?
Answer to relevant QuestionsA random sample of 25 families leaving a supermarket yields an average grocery bill of $112.36, with a standard deviation of $32.45. A histogram of the data is approximately normal. Construct a 95% confidence interval for ...In a survey, 43% of the 2,450 respondents said they had phoned in sick when they were not ill. Construct a 99% confidence interval estimate for the proportion of workers who phone in sick when they are not ill. Do you think ...A manufacturer of cars that have had a poor quality rating in the past wants to estimate the average annual maintenance expenditure for its entry-level compact in the third year of its life. A random sample of 60 customers ...How big a sample is necessary to estimate, to within 2 percentage points, the proportion of new graduates of a business program who are willing to relocate to find a job, with 90% confidence? If your college graduates only ...A number of economic analysts were asked to rate their expectations for the economies of North America and Europe over the coming year, according to the following scale: (4) prospects are very promising; (3) prospects are ...
Post your question