Question

New research on the effects of social media usage has been mixed. Some studies have found that social media helps people stay connected to others, and can be a positive source of social support. Other studies have found that social media makes people feel lonely and unhappy. I decide to do my own study to see whether social media has an effect on how many close friends people have. I conduct an internet survey of 1000 people and ask them how many hours a week they spend on social media and how many close friends they have. In the study respondents spent 10 hours a week using social media, and had 4 close friends, on average. The standard deviations for social media usage and close friends were 4 hours and 2 friends, respectively.  The correlation (r) between social media and friends was -.3.

3.Calculate & Interpret in a complete sentence: (a) slope (b) intercept and (c) coefficient of determination.

4.Write the equation of the regression line making sure to insert the variables names and values for the slope and intercept.

5.How many close friends does this regression model predict you should have, based on your social media usage? Make sure to show your work.

All three questions please.

Answer 1