### Study on Social Media Usage Among College StudentsA recent study investigated the amount of time per day that freshmen, sophomores, juniors, and seniors spend on social media while doing schoolwork. The data was collected from students at a 4-year, public, primarily residential institution in the United States. The goal was to determine if freshmen use social media significantly more than other class ranks. Using the mean time each cohort spent on social media, an ANOVA table was generated to help analyze the data.#### Summary Statistics and ANOVA Table- **n** (Sample size) - Freshmen (FR): 443 - Sophomores (SO): 330 - Juniors (JU): 383 - Seniors (SE): 410- **Mean Social Media Usage (minutes per day)** - Freshmen: 62.5 - Sophomores: 56.5 - Juniors: 72.0 - Seniors: 50.4- **Standard Deviation (Std. Dev.)** - Freshmen: 62.6 - Sophomores: 68.5 - Juniors: 85.0 - Seniors: 62.9#### ANOVA Results- **Source of Variation: Class** - Degrees of Freedom (DF): 3 - Sum of Squares (SS): 99509 - Mean Square (MS): 33170 - F-statistic (F): 6.53 - P-value (P): 0.000- **Source of Variation: Error** - Degrees of Freedom (DF): 1562 - Sum of Squares (SS): 7927979 - Mean Square (MS): 5076- **Total** - Degrees of Freedom (DF): 1565 - Sum of Squares (SS): 8027488The results indicate a significant difference in mean social media usage among the different class ranks (p-value < 0.05).#### Confidence IntervalA 95% confidence interval is constructed to compare the population mean time spent on social media per day between freshmen and seniors.This analysis shows clear variations in social media usage across different class standings, helping to inform educational strategies and understand student behavior better.

The given error degrees of freedom is 1562, the mean square error is 5076.The sample size for…

Answered: Do freshmen spend significantly more…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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A study from 2014 found that adults in the US spend an average of 11 hours per day watching, reading, listening to or simply interacting with media. Researchers at UCLA suspect students spend less time engaging media. They grouped UCLA students by class section, randomly selected 20 class sections, and administered a survey to each student in those randomly selected class sections. The following data represents the mean time (in hours) per day spent engaging media for each of the randomly selected classes: 9.5 11.5 6.0 7.5 8 9.5 10.5 11 12 8.2 5 9.5 8.2 9.3 10.8 11 13 8.6 9.5 10.5 What would be the calculator steps to find standard deviaton, rounded to 3 decimal places?
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