According to a Recent Survey, Women Chat on Their Mobile

question 45

Essay

According to a recent survey, women chat on their mobile phones more than men (CNN.com, August 25, 2010). To determine if the same patterns also exist in colleges, Irina takes a random sample of 40 male students and 40 female students in her college. She finds that female students chatted for a sample average of 820 minutes per month, with a sample standard deviation of 160 minutes. Male students, on the other hand, chatted for a sample average of 760 minutes per month, with a sample standard deviation of 240 minutes. It is not reasonable to assume equal population variances.
A) Obtain a 95% confidence interval for the difference between the average amount of chat time for males and the average amount of chat time for females.
B) Make a conclusion at the 5% significance level.

• A) Obtain a 95% confidence interval for the difference between the average amount of chat time for males and the average amount of chat time for females.
• B) Make a conclusion at the 5% significance level.

---

Definitions:

Fallacy of Division

The erroneous assumption that what is true of a whole must also be true of its parts.

Division

The process of dividing or the state of being divided.

Kittens

Young domestic cats, often characterized by their playful and curious nature.

Loaded Question

A question that contains a controversial or unjustified assumption, often steering the response in a particular direction.