A Manufacturer Of Cell Phone Batteries Claims
A Manufacturer Of Cell Phone Batteries Claims . The manufacture claims that the average battery life exceeds 40 hours. A consumer group will obtain a random sample of 100 of the manufacturer’s batteries and will calculate the mean number of recharge cycles. Kealive Cordless Vacuum, 23000pa Stick Vacuum 5 in 1 from www.amazon.com Another possible cause of battery explosion is when the cell phone overheats. To support this claim, the company publishes an ad reporting the results of a recent experiment showing that under normal usage, their batteries last more than 35 hours. The tested batteries had a mean life span of 270 hours with a standard deviation of 50 hours.