Work Interruptions A survey found that out of 200 workers, 168 said they were
Chapter 7, Problem 7(choose chapter or problem)
Work Interruptions A survey found that out of 200 workers, 168 said they were interrupted three or more times an hour by phone messages, faxes, etc. Find the 90% confidence interval of the population proportion of workers who are interrupted three or more times an hour.
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