Question: explain the answer to this question iv) What is the appropriate sample size for the survey if they were happy to accept a margin of

explain the answer to this question

explain the answer to this question iv) What is
iv) What is the appropriate sample size for the survey if they were happy to accept a margin of error of half a day (0.5) and still be 90% confident of their interval of mean days stayed? Would the sample be larger or smaller if you wanted to be 95% confident? Explain

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