One item every 66 minutes, so 8080 items are completed in hishis first dayday of work. hishis manager checks hishis work by randomly selecting anan hourhour of the day commaday, then reviewing all the items hehe completed that hourhour. does this sampling plan result in a random sample

If each item has an equal chance of being selected, then the sampling plan result in a random sample. The manager checks his work by randomly selecting an hour and the items he completed that hour. So, yes, t his sampling plain results in random sampling because each item has an equal chance of being selected.