Question

In general people diagnosed with generalized anxiety disorder (GAD) report an average of 3.36 panic attacks per year. A random sample of 501 people diagnosed with GAD and major depressive disorder were given a new drug for reducing panic attacks over the course of a year. Their mean number of panic attacks were 2.65, SD = 3.11.

With 99% confidence, where would the mean number of panic attacks for all people diagnosed with GAD and major depressive disorder lie for those taking the new drug?

What is the critical value?

Depending on the appropriate CI formula, calculate whichever is requested by the formula: the SEM, est. SEM, or est SEdiff

What is the lower bound CI?

What is the upper bound CI?

Based on the CI containing/not containing the population mean, what can you conclude about the null hypothesis?

Answer 1

Total number of people diagnosed =n= 501