The Marketing Manager for Voice-Talk,a Cell Phone Company,has Taken a Sample

True/False

The marketing manager for Voice-talk,a cell phone company,has taken a sample of 300 customers from the list of 4,356 total customers.The mean monthly bill for the last October based on the sample data is $45.62.The manager should realize that the mean bill for all 4,356 customers will actually be higher than $45.62.