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D www.webassign net/web/Student/Assignment-Responses/submit?dep 15675167 14 points l Previous Answers MBasicStat7 25 E008. The popularity of computer, video, online, and virtual reality games has raised concerns about their ability to negatively impact y inconsistent. The data in this exercise are based on a recent survey of 14- to 18-year-olds in Connecticut high schools. Here are t not played video games: Grade Average As and Bs Cs Ds and Fs Played games 736 Never played games 205 Data analysis finds that boys who have played video games tend to have higher grades than those who have not. The figure below giv data above. (Data set may be found here.)

Explanation / Answer

H0: There is no association between grades and video games playing

H1: There is association between grades and video games playing

The expected frequencies are

The chisquare contribution values are

Degrees of freedom: 2

b) Test Statistic, X^2: 6.7392
Critical X^2: 5.991471
P-Value: 0.0344

c) Here P-value < alpha 0.05, we reject H0

Thus we conclude that  there is association between grades and video games playing

correct answer: Option (A)

Grade average A's and B's Cs Ds and Fs Total Played 717.721 453.056 208.223 1379 Never Played 223.279 140.944 64.777 429 Total 941 594 273 1808

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