A Research Firm Conducted a Survey to Determine the Mean

question 37

Essay

A research firm conducted a survey to determine the mean amount people spend at a popular coffee shop during a week. They found the amounts spent per week followed a normal distribution, with a population standard deviation of $4. A sample of 49 customers revealed that the mean is $25. What is the 95% confidence interval estimate of µ?

---

Definitions:

Obsessive-compulsive Disorder

A mental health condition characterized by unwanted, persistent thoughts (obsessions) and repetitive behaviors (compulsions) performed to alleviate distress.

Cognitive-behavioral Therapy

A short-term, goal-oriented psychotherapy treatment that takes a hands-on, practical approach to problem-solving, focusing on challenging and changing unhelpful cognitive distortions and behaviors.

Psychotropic Medication

Medicines used to affect the mind, emotions, and behaviors by altering brain chemistry, commonly used to treat mental health disorders.

Electroconvulsive Therapy

A mental health therapy that involves triggering seizures in patients through electrical means to alleviate symptoms of psychiatric conditions.