please help In a survey conducted for American Express, 27% of small business ow

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please help

In a survey conducted for American Express, 27% of small business owners (that were sampled) indicated that they don't check in with the office while on vacation. If you are to create a confidence interval, which would be a wider interval, one with 90% confidence or one with 95% confidence? 95% 90% It is impossible to answer, since you don't know n They would be the same width Suppose you Know the value of s, but not the value of sigma. If the sample size increases just slightly while the confidence level remains unchanged, the confidence interval will ______ Widen

Explanation / Answer

When we say that the confidence interval is 90%, we mean that we are 90% sure that the population mean will lie in the range we define. Thus, a 95% interval is wider than a 90% interval. Hence option a

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