Mathematics, 10.04.2021 09:10 villarrealc1987
Past surveys reveal the 30% of tourists going to Las Vegas to gamble spend more than $1,000. The Visitor's Bureau of Las Vegas wants to update this percentage. The new study is to use the 90% confidence level. The estimate is to be within 1% of the population proportion. What is the necessary sample size?
Answers: 1
, and a confidence level of 
, we have the following confidence interval of proportions.
.
, z is the value of Z that has a pvalue of 
, so 
. 
. So
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Past surveys reveal the 30% of tourists going to Las Vegas to gamble spend more than $1,000. The Vis...
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