Battery Life a Certain Brand of Batteries Has a Lifetime That

question 73

Short Answer

Battery Life
A certain brand of batteries has a lifetime that has a normal distribution with a mean of 3,750 hours and a standard deviation of 300 hours. ​ ​
-{Battery Life Narrative} What lifetime should the manufacturer advertise for these batteries in order that only 2% of the lamps will wear out before the advertised lifetime?

---

Definitions:

Cross-lagged

A statistical technique used in time series analysis to determine the relationship between variables at different points in time.

Cohort

A group of subjects who share a defining characteristic, often studied over a period of time to observe changes and outcomes.

Demographic Question

A demographic question seeks information about the characteristics of respondents, such as age, gender, ethnicity, or income, often used in research to analyze trends within specific population segments.