Question

Andrey works at a call center, selling insurance over the phone. While debating over which greeting he

should use when calling potential customers - "Howdy!" or "Hiya!" - he decided to conduct a small study.
For his subsequent 500 calls, he chose one of the greetings randomly by flipping a coin. Then, he compared
the percentage of calls he succeeded in selling insurance using each greeting.
What type of a statistical study did Andrey use?
Choose 1 answer:
Sample study
Experiment
Observational study

Answer 1

Andrey conducted an experiment by manipulating one variable (the greeting) to see if it affected another variable (sales outcomes), using a random method (coin flip) to choose the greeting for each call.

Step-by-step explanation:

The type of statistical study that Andrey used is an experiment. An experiment involves not only observing but also manipulating one variable to determine if it causes a change in another variable. By flipping a coin to randomly select the greeting - "Howdy!" or "Hiya!" - and then observing the success rate in selling insurance, Andrey is conducting an experiment to see if the different greetings have an impact on sales outcomes.