Did you know confidence intervals are also used to project reliability in consumer products? We use confidence intervals

[answerhappygod]

Did you know confidence intervals are also used to project
reliability in consumer products? We use confidence intervals in
our daily lives, from consumer ratings to election projections.
Seeing this data helps us make decisions on the best option to
choose. If, for example, one brand of refrigerator has a 17% chance
of needing repair in the first three years. A different brand may
have a 3-year repair rate of 19%. If a footnote says, "differences
of more than 4% are meaningless," we can conclude that the repair
rates really are not that different! However, any refrigerator with
a repair rate more than 4% higher than 17% is more likely to need
repair in the next three years.
Provide a link to the data and respond to the following
questions.
** Need references.