Using the light bulb distribution in Exercise 11 above, calculate what length-of-life guarantee your company should issue

Question:

Using the light bulb in Exercise 11 above, calculate what length-of-life guarantee your company should issue so that no more than 2.5% of light bulbs will fail to meet the guarantee.
Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...