Question

A music industry producer wondered whether there was a difference in length (measured in seconds) of rhythm and blues songs (R&B) songs versus alternative rock songs. He obtained a random sample of songs from each music category and documented the song lengths. The results are in the following table. Test at a 10% significance level whether the rhythm and blues songs are longer than alternative rock songs.

R&B: Mean 242.7 Standard Deviation 26.9 Sample Size 30

Alt Rock: Mean 230.3 Standard Deviation 28.9 Sample Size 30

Answer 1