StacyMarie23
Nov 26, 2012, 06:34 PM
Can anyone help me with this problem Im stuck on?
The average local cell phone call length was reported to be 2.27 minutes. A random sample of 20 phone calls showed an average of 2.98 minutes in length with a standard deviation of 0.98 minute. At a= 0.05 can it be concluded that the average differs from the population average? Can you explain the steps with the answer?
The average local cell phone call length was reported to be 2.27 minutes. A random sample of 20 phone calls showed an average of 2.98 minutes in length with a standard deviation of 0.98 minute. At a= 0.05 can it be concluded that the average differs from the population average? Can you explain the steps with the answer?