Statistics II20795 marksNumerical: chi-square test independenceTwo independent sample test
A study showed the following results for the different age groups. At the 0.05 level of significance, is there evidence of a difference among the age groups with respect to use of mobile phones for accessing social networking?
A study showed the following results for the different age groups. At the 0.05 level of significance, is there evidence of a difference among the age groups with respect to use of mobile phones for accessing social networking?
$$\begin{array}{|c|c|c|c|} \hline \text{Use mobile phones to access social networking?} & \text{18-34} & \text{35-64} & \text{65+} \ \hline \text{Yes} & 60 & 37 & 14 \ \text{No} & 40 & 63 & 86 \ \hline \end{array}$$
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18-34 35-64 65+ Row Total --------------- Yes 60 37 14 111 No 40 63 86 189 Col Total 100 100 100 300 Level of significance: $\alpha = 0.05$ - $H0$: There is no difference among age groups regarding use of mobile phones for social networking (independent). - $H1$: There is a difference among age g...