select the correct answer from each drop - down menu. a restaurant is analyzing its customer satisfaction…

select the correct answer from each drop - down menu. a restaurant is analyzing its customer satisfaction level. the manager performs an observational study of customers during the lunch hour on a monday and draws the conclusion that most of the customers are satisfied with the service they receive. the conclusion drawn from the study is not valid because the sample is biased/unbiased. in this instance, an study was conducted. reset
Answer
Brief Explanations:
The conclusion is not valid because observing customers only during lunch - hour on a Monday is a biased sample. It doesn't represent all customers at all times. An observational study was conducted.
Answer:
The conclusion drawn from the study is not valid because the sample is biased. In this instance, an observational study was conducted.