A researcher wants to estimate and calculate a confidence interval for the proportion of people who cycle to work in a large population. To calculate the confidence interval which of the following is true?

we must assume that we have a random sample from a normal population

we must assume that we have a random sample from a binomial population where np> 5 and n(1- p)> 5

we must assume that the population is normal (but we do not require a random sample because of the Central Limit Theorem).

we do not need to assume that the population is normal nor that the sample is random (because of the Central Limit Theorem).

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The sample is assumed to be... View the full answer