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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.
Therapeutic Success
The achievement of desired outcomes or improvements in health and well-being as a result of medical or psychological treatment.
Treatment Components
The individual elements or techniques that make up a therapeutic intervention or treatment plan.
Outcome Research
The study of the results or outcomes of specific interventions, treatments, or services to determine their effectiveness.
Treatment Components
The specific elements or parts of a therapeutic intervention or program designed to address and ameliorate symptoms of a disorder or problem.
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