Just looking at the data, it appears there will be statistically significant difference in the amount of songs young women are able to hum compared with the other groups. Specifically, young women hum significantly more songs. To test this you will need to perform an ANOVA between the groups. If you don't have a computer program to do it, I believe an ANOVA uses the mean and standard deviation for each treatment group. I'm sure your cl has taught you the formula!
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