Question: Question 4 1.76 pts A design engineer wants to construct a sample mean chart for com the service life of a halogen headlamp her company

Question 4 1.76 pts A design engineer wants to construct a sample mean chart for com the service life of a halogen headlamp her company produces. On three recen powuction batches, she tested service life on random samples of four headlamps, with these results: Sample 1 2 3 495 525 470 Service Life (hours) 500 505 515 505 480 460 500 515 470 What is the sample mean service life for sample 3? 495 hours 470 hours 460 hours 500 ours 525 hours

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