A Survey of 100 Businesses Revealed That the Mean After-Tax

question 49

Essay

A survey of 100 businesses revealed that the mean after-tax profit was $80,000.Assume the population standard deviation is $15,000:
a.Determine the 95% confidence interval estimate of the mean after-tax profit for all businesses.
b.Explain why you can use the confidence interval formula here,even though the population is not necessarily normal.

---

Definitions:

Parent Management Training

A therapeutic approach aimed at teaching parents skills to manage their children's behavioral problems effectively.

Family Intervention

A structured method of assistance where family members come together to address issues affecting one or more of their members, often related to mental health or substance abuse.

Autism Spectrum Disorder

A range of neurological and developmental disorders characterized by difficulties in social interaction and communication, along with restricted and repetitive behaviors.

Delinquent-Type Behaviors

Actions that violate social norms or laws, often performed by juveniles.