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Writing a Hit Song: In the manual "How to Have a Number One the Easy Way,\" by KLF Publications, it is stated that a song "must be no longer than three minutes and thirty seconds\" (or 210 seconds). A simple random sample of 40 current hit songs results in a mean length of 252.5 sec. Assume that the standard deviation of song lengths is 54.5 sec. Use a 0.05 significance level to test the claim that the sample is from a population of songs with a mean greater than 210 sec. What do these results suggest about the advice given in the manual