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[1.5%] TWO SAMPLE HYPOTHESIS TEST FOR MEAN ? INDEP...

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[1.5%] TWO SAMPLE HYPOTHESIS TEST FOR MEAN ? INDEPENDENT SAMPLES: Eight college students were randomly divided into 2 groups of 4 each to test whether background music reduces studying capacity. Each person was tasked with memorizing a list of 20 words. Group 1 had music playing through earphones they were wearing. Group 2 was not distracted. The following are the number of words correctly remembered by each subject. Test whether the music reduces studying capacity at a .05 level of significance. Group 1 -- DISTRACTED Group 2 ? NOT DISTRACTED Sample mean = 7 Sample size = 4 Sample std.dev. = 2.5 Sample mean = 14 Sample size = 4 Sample std.dev. = 3.5 3a) Direction = UPPER TAILED / LOWER TAILED / 2-TAILED (circle one) 3b) P-value = ________________ 3c) REJECT THE NULL or DO NOT REJECT THE NULL? (circle one) 3d) Can we conclude that music reduces studying capacity? YES or NO (circle one)

 

Paper#13194 | Written in 18-Jul-2015

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