A sales manager for an advertising agency believes there is a relationship between the number of contacts and the amount of the sales. To verify this belief, the following data was collected: 
The 95% confidence interval for 30 calls is
Definitions:
Social Consciousness
Awareness of the society and issues affecting it, often motivating action towards change.
Derogatory Slang
Language terms that are offensive or express a negative attitude towards a particular group of people.
Purist Point of View
Represents a perspective that adheres strictly to traditional principles or methods, often resisting change or adaptation.
Ethnographic Study
An ethnographic study is a qualitative research method focusing on the customs, practices, and social behaviors of specific cultures or communities, typically through fieldwork and participant observation.
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