According to a Recent Survey,women Chat on Their Mobile Phones

question 116

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.Specify the competing hypotheses to determine if female students chat,on average,more than male students.
b.Calculate the value of the test statistic and its p-value.c.Make a conclusion at the 10% significance level.

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Definitions:

HIV/AIDS Research

Scientific studies focused on understanding, preventing, and treating human immunodeficiency virus (HIV) and acquired immunodeficiency syndrome (AIDS).

Sub-Saharan Africa

The region of Africa located south of the Sahara Desert, characterized by diverse cultures, languages, and economies, facing various development challenges.

Leading Cause

refers to the primary factor or condition that results in a particular outcome or effect, often used in contexts like disease or death.

Death

The end of all vital functions necessary to keep an organism alive.