For each of the following situations, indicate whether the analysis is an example of a descriptive analytic, diagnostic analytic, predictive analytic, or prescriptive analytic.

1. An accounting firm is trying to understand if its external audit fees are appropriate. They compute a regression using public data from all companies in their industry to understand the factors associated with higher audit.
2. A self-driving car company uses artificial intelligence to help clean its historic social media data so they can analyze trends.
3. An airline downloads weather data for the past 10 years to help build a model that will estimate future fuel usage for flights.
4. A shipyard company runs a computer simulation of how a tsunami would damage its shipyards, computing damages in terms of destruction and lost production time.
5. An online retail company tracks past customer purchases. Based on the amount customers previously spent, the program automatically computes purchase discounts for current customer purchases to build loyalty.
6. An all-you-can-eat restaurant uses automated conveyer belts to bring cold food to the chefs for preparation. The conveyer belts bring the food to the chefs based on algorithms that monitor the number of people entering and leaving the restaurant.
7. A large manufacturer of farm equipment continuously analyzes data sent from engine sensors to understand how load, temperature, and other factors influence engine failure.
8. A small tax services business provides its financial statements to a bank to get a loan so it can buy a new building to grow its business.