Biologists studying horseshoe crabs want to estimate the percent of crabs in a certain area that are longer than 35 cm. The biologists will select a random sample of crabs to measure. Which of the following is the most appropriate method to use for such an estimate?
answer choices
A one-sample z-interval for a population proportion
A one-sample z-interval for a sample proportion
A two-sample z-interval for a population proportion.
A 2-sample z-interval for a difference between population proportions.
A 2-sample z-interval for a difference between sample proportions.