Question

The person making the payment might not be the one deciding on the TIPAMT. Does this create a problem in the internal validity of the experiment? Select one: a. Yes, but a field experiment always suffers from internal validity issues as compared to a laboratory experiment b. Yes, but the overall idea is to see whether customers are more satisfied (measured by the amount of tip they leave) with prompt service (measured by having multiple servers) and perceived attentiveness (measured by the number of eye contacts made by servers with customers). c. Yes, but this bias does not make the experiment fatally flawed and the results can still be used d. a and bare false e. a, b, care true

that is all the data given

Answer 1

Answer) In given case experiment is weather amount of tip represents the better service,so internal validity implies whether an effect can be attributed to a particular cause or not,in this case we will evaluate all 3 options.

1. First option is true,there is a difference between field and laboratory experiment as conditions are not perfect in field experiment.
2. Second option is also true as the idea of experiment is to see whether tip amount represents satisfaction of service which is what experiment is about,this is what we are trying to establish,so this is correct.
3. Here bias is present as 1 person is giving total tip,however,to that person also other people most likely contributed and give it,so overall amount can give us some idea,so total experiment is not failed.

So option e here which states option a,b, and c all are correct is the correct option.

Answer is complete.Thank you!