Standard Error Worksheet with Answer Key

What's on the worksheet

1. Each line gives the number of successes x in a random sample of size n from a large population.
   x = 84,\ n = 300x = 117,\ n = 650x = 39,\ n = 60x = 1{,}104,\ n = 2{,}400x = 9,\ n = 125
2. A vacation-rental website lists 18,000 homes in one coastal region.
3. An online grocery service claims that 85% of its orders arrive within the delivery window.
4. An editor counts the entries on a random sample of 49 pages of a large dictionary.
5. A home-repair app has about 40,000 registered workers.
6. A travel website runs a pop-up poll asking readers whether they took a trip by plane in the past year.