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According to a Recent Survey, Women Chat on Their Mobile

question 20

Essay

According to a recent survey, women chat on their mobile phones more than do 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 more, on average, than male students.
B) Calculate the value of the test statistic and its p-value.
C) Make a conclusion at the 5% significance level.

Understand the concept of self-directed work teams and their dynamics.

Differentiate between constructive conflict and problems such as groupthink in teams.

Understand the reasons for joining and the benefits of participating in informal groups.

Describe various types of teams and their characteristics, such as task forces and skunkworks teams.

Definitions:

Digital Recorder

An electronic device designed to record and store audio or video signals digitally for later playback or processing.

Interviewee

A person who answers questions during an interview, typically the one being interviewed.

Interviewer

A person who asks questions to another individual, known as the interviewee, in a formal or informal setting, often for the purpose of gathering information, evaluating qualifications, or for media publication.

Locating

The act of finding or establishing the position of something, often used in legal contexts to refer to identifying persons, assets, or information.