A mountain climber plans to buy some rope to use as lifeline. Which of the following would be the better choice? Explain your choice. Rope A: Mean breaking strength:500lb; standard deviation of 100lb...

A mountain climber plans to buy some rope to use as lifeline. Which of the following would be the better choice? Explain your choice.
Rope A: Mean breaking strength:500lb; standard deviation of 100lb
Rope B: Mean breaking strength: 500lb; standard deviation of 10lb