The times (in minutes) to assemble a component for three different cell phones are listed below. Use

Which of the following is correct?

◦ The mean time to assemble Phone 2 is the same as the mean time to assemble Phone 3.
◦ There is not enough evidence to suggest that the means are different.
◦ The mean time to assemble Phone 1 is different from the mean time to assemble Phone 3.
◦ The mean time to assemble Phone 1 is the same as the mean time to assemble Phone 2.