How lengths of cuts on cd to be one thirty two second

Assignment Help Basic Statistics

Reference no: EM13108294

CRA CDs Inc. wishes mean lengths of "cuts" on a CD to be 132 seconds (2 minutes and 12 seconds). This will permit disk jockeys to have plenty of time for commercials in each 10-minute segment. suppose distribution of the length of cuts follows normal distribution with population standard deviation of 7 seconds. Assume we choose a sample of 18 cuts from various CDs sold by CRA CDs Inc.

Reference no: EM13108294

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