Question

A spark plug is guaranteed to last 50,000 miles, with a standard deviation of 1,500 miles. If this spark plug becomes defective at 49,000 miles, is it still under warranty?
A. Yes
B. No


Wouldnt it be Yes, since theirs still 1,000 miles left?

Answer 1

@HeatDude

Answer 2

50,000 - 1,500 = 48,500
anything under 50,000 has warranty, so Id say yes