Use data from a sample survey to estimate a population mean or proportion; develop a margin of error through the use of simulation models for random sampling.
Example Problems
A tennis instructor takes a random sample of first serves from her students' match play and finds that land in.
Based on this sample, what is the confidence interval for the proportion of first serves that land in?
Round your answers to the nearest thousandth.
Based on this sample, what is the confidence interval for the proportion of first serves that land in?
Round your answers to the nearest thousandth.
A soccer club randomly samples corner kicks from a season's recordings and finds that led directly to a goal.
Based on this sample, what is the confidence interval for the proportion of corner kicks that lead directly to a goal?
Round your answers to the nearest thousandth.
Based on this sample, what is the confidence interval for the proportion of corner kicks that lead directly to a goal?
Round your answers to the nearest thousandth.
A game studio wants to make a one-sample -interval to estimate the proportion of Minecraft players who play on a mobile device. They want the margin of error to be no more than at confidence.
What is the smallest sample size required to obtain the desired margin of error?
What is the smallest sample size required to obtain the desired margin of error?
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