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Mathematics, 30.05.2020 21:03 eldiamonte
A local radio station plays 40 rock-and-roll songs during each 4-hour show. The program director at the station needs to know the total amount of airtime for the 40 songs so that time can also be programmed during the show for news and advertisements. The distribution of the lengths of rock-and-roll songs, in minutes, is roughly symmetric with a mean length of 3.9 minutes and a standard deviation of 1.1 minutes.
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A local radio station plays 40 rock-and-roll songs during each 4-hour show. The program director at...
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