AP Statistics Section 10.3: Estimating a Population Proportion.

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Presentation transcript:

AP Statistics Section 10.3: Estimating a Population Proportion

Example: Spinning pennies. (pool data together) Create a 95% confidence interval for the true proportion of time a spinning penny falls heads up.

Example: A random sample of 71 MHS students revealed that 24 wanted to attend a state funded college or university. Create a 90% confidence interval for the true proportion of MHS students that want to attend a state funded college or university. If we wanted the interval to have a width of no more than 8%, how many students would we need to sample? Use the conservative method.