DB 5.1Quantitative studies can be designed in many ways. Please explain the differences between and among the following:a) experimental, quasi-experimental, and pre-experimental studies (be sure to discuss the concept and usage of a control group)b) between-subjects and within-subjects studiesc) non and single and double blind studiesAfter you differentiate between the above concepts, please upload the pdf of a study and explain how it might be different if one or more of the above were changed.DB 5.2Anethnography is a detailed, qualitative study that emphasizes describing a concept with precision and accuracy, as opposed to explaining what causes it. What are the advantages and disadvantages to running this type of study, as opposed to a quantitative experiment? Also, what is theethnographic fallacy, and why should scientists be wary of it?