please help me answer this.thank you

There are two grades in a 1 point Performance Tasks in MAPEH that you want to interpret in terms of performance: dancing score (80) and singing score (76). The means are 78 and 72 respectively while the standard deviations are 10 and 3 respectively. Which skills have a better performance? Dancing skill has better performance than singing skill since 0 the computed z-value of dancing skill is greater than that of the singing skill. Singing skill has better performance than dancing skill since the O computed z-value of singing skill is greater than that of the dancing skill. The dancing and singing skill have 0 the same performance since the computed z-value of the singing skill is equal to that of the dancing skill