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# the mean lengths of the cuts on a cd are 135 seconds. this allows the disk jockeys to have plenty of time for commercials within each 10 minute...

the mean lengths of the cuts on a cd are 135 seconds. this allows the disk jockeys to have plenty of time for commercials within each 10 minute segment. assume the distribution of the length of the cuts follows the normal distribution with a population standard deviation of 8 seconds. suppose we select a sample of 16 cuts from various CDs. 1.what can we say about the sample of the distribution mean? 2.what is the standard error of the sample?3. what percentage of the sample means will be greater than 140 seconds?4. what percent of the sample means will be greater tan 128 seconds?5. what percent of the samples will be greater than 128 but less than 140 seconds?