A random sample of n = 9 individuals is obtained from population with mean of µ = 80, the population variance is unknown. Researcher wants to if listening to Mozart Music improves spatial skills. Mozart music is administered to each individual in the sample for 20 minutes. After which each individual is given a spatial task. The average score for the treated sample is M = 86 with SS = 288. Alpha level is set at .01
What decision should the researcher make?
Reject the Null, listening to Mozart doesn't affect spatial skills.
Fail to Reject the Null, listening to Mozart music improves spatial skills.
Reject the Null, listening to Mozart music improves spatial skills.
Fail to reject the Null, listening to Mozart doesn't improve spatial skills.