Mathematics, 05.05.2020 11:48 Stuckonhomework
The population standard deviation for the lengths, in seconds, of the songs in an online database is 15 seconds. If we want to be 90% confident that the sample mean is within 4 seconds of the true population mean, what is the minimum sample size that should be taken?
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The population standard deviation for the lengths, in seconds, of the songs in an online database is...
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