Estimation of right sample size

Reference no: EM1318472

Previous polls reveal that 30% of the tourist that goes to Las Vegas to play spends more than $1000. The administration wants to update this percentage.

a) The new study is going to use the confidence level of 90%. The estimator or appreciative must be in 1% of the population proportion. Which is the necessary size of the sample?

b) The administration said that the size of the sample was previously determined is too large. What can we do to reduce the sample? Base on your suggestion, calculate the sample again.

Reference no: EM1318472

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