The Records of a Department Store Show That 20% of Their

question 67

Short Answer

The records of a department store show that 20% of their customers who make a purchase return the merchandise for exchange. If the distribution of the random variable x describing the number of purchases is binomial,
a) what is the probability that at least 2 customers return the merchandise for exchange?
b) what is the expected number and standard deviation of customers who return the merchandise for exchange?

---

Definitions:

Alternative Dispute Resolution

Processes such as mediation or arbitration used to resolve disputes outside of traditional court proceedings.

Civil Action

A lawsuit brought in court to enforce or protect private rights, typically involving disputes between individuals or organizations.

Massage Therapy

A healthcare practice where manipulation, rubbing, and kneading of the body's muscles and soft tissues are used to promote health and wellbeing.

Unpaid Massage Therapy Sessions

Refers to instances where massage therapy services have been provided but payment has not been received.