The Times (In Minutes) to Assemble a Component for Three

The times (in minutes) to assemble a component for three different cell phones are listed below. Use Which of the following is correct?

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

Correct Answer:

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