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# Use the following to answer the questions below:Data were collected on GPA and number of Facebook ...

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Use the following to answer the questions below:

Data were collected on GPA and number of Facebook friends for students in a small statistics class. Some summary statistics, partial output from the regression analysis, and a scatterplot of the data (with regression line) are provided. Assume that students in this class are typical of all students at the university.

Use three decimal places when reporting the results from any calculations, unless otherwise specified.

 Variable Mean StDev Minimum Maximum GPA 3.2067 0.4118 2.4000 3.9500 FacebookFriends 677.9 307.2 185.0 1500.0

The regression equation is GPA = 3.830 - 0.000919 FacebookFriends

 Source DF SS MS F P Regression 1 2.31193 2.31193 24.85 0.000 Error 28 2.60534 0.09305 ​ ​ Total 29 4.91727 ​ ​ ​

Use the provided output to construct a 90% confidence interval for the mean GPA of all students with 800 Facebook friends.

▸ 2.993 to 3.197

▸ 3.035 to 3.155

▸ 2.916 to 3.274

▸ 2.760 to 3.430
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## Statistics: Unlocking the Power of Data

Edition: 3rd
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bhturnerbhturner
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