A research survey is commissioned to estimate the proportion of UK people who have traveled to France by taking Eurostar. The survey is told that the estimate must not differ from the true proportion by more than 3% with a confidence level of 95%. How large a sample should be taken? How about at 99% confidence?
A research survey is commissioned to estimate the proportion of UK people who have traveled to France by taking Eurostar. The survey is told that the estimate must not differ from the true proportion by more than 3% with a confidence level of 95%. How large a sample should be taken? How about at 99% confidence?
Chapter9: Sequences, Probability And Counting Theory
Section9.7: Probability
Problem 1SE: What term is used to express the likelihood of an event occurring? Are there restrictions on its...
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A research survey is commissioned to estimate the proportion of UK people who have traveled to France by taking Eurostar. The survey is told that the estimate must not differ from the true proportion by more than 3% with a confidence level of 95%. How large a sample should be taken? How about at 99% confidence?
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