In the college population, the mean reading comprehension testscore is ? = 75 and ? = 25. Aresearcher wanted to investigate the effect of listening to hip-hopmusic on reading comprehension. She randomly selected a sample ofn = 100 college students. The sample of students completeda reading comprehension test while hip-hop music was played in thebackground the sample mean reading comprehension score wasM = 68.
Do the data indicate a significant effect of hip-hopmusic on reading comprehension? Use a two-tailed z - test withp < .05 to answer this researchquestion.
- Null and alternative hypotheses
- All computational steps of the z-test
- Critical z-value used for decision about H0
- Decision about H0 (i.e., reject or fail toreject)
- If the effect is significant, compute the Cohen's dto establish the size of the effect - is the effect small, mediumor large?
- Conclusion in APA style: interpretation of the z-testoutcome to answer the research question. Is there a significanteffect of hip-hop music on reading comprehension or not? If thereis a significant effect, address in your conclusion the directionof the effect (i.e., is the effect positive or negative/is there animprovement or decline of reading comprehension?) and report theCohen's effect size.
Please explain in very broken down and simple steps, thankyou!
