2. Twenty drivers have installed sound system in their respective jeepneys while 26 drivers remained not to have an installation for the meantime. Test if the sound system installation makes a difference in the number of passengers who load in the jeepneys of the drivers using 0.05 level of significance. Types of Jeepney Reference Points With sound system Without sound system 348 304 X S 15 11 n 20 26

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