# Considering only students whose roommate does bring a videogame to campus, find and interpret a 95% confidence interval for the

## Question:

We investigate answers to the questions: How much of an effect does your roommate have on your grades? In particular, does it matter whether your roommate brings a videogame to college? Exercise B.7 on page 306 introduces a study involving n = 210 first-year students who were randomly assigned a roommate. Table 6.19 gives summary statistics on grade point average (GPA) for the first semester depending on whether the student and/or the roommate brought a videogame to campus.

Table 6.19

**Exercise B.7 on page 306**

How much of an effect does your roommate have on your grades? In particular, does it matter whether your roommate brings a videogame to college? A study examining this question looked at n = 210 students entering Berea College as first-year students in the Fall of 2001 who were randomly assigned a roommate. The explanatory variable is whether or not the roommate brought a videogame to college and the response variable is grade point average (GPA) for the first semester.

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**Related Book For**

## Statistics Unlocking The Power Of Data

**ISBN:** 9780470601877

1st Edition

**Authors:** Robin H. Lock, Patti Frazer Lock, Kari Lock Morgan, Eric F. Lock, Dennis F. Lock

**Question Details**

**6**- Inference for Means and Proportions

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**Question Posted:**December 04, 2018 10:11:22