A manufacturer of cell phone batteries markets its batteries

Last updated: 12/22/2023

A manufacturer of cell phone batteries markets its batteries as having on average 500 charges A consumer group decides to test this claim by assessing the number of times 30 of their cell phone batteries can be recharged and finds the average is 497 with a standard deviation of 10 The resulting p value is 1111 thus the null hypothesis is not rejected The consumer group concludes that the manufacturer s claim that its cell phone batteries can be recharged on average 500 times is accurate What type of error is possible in this situation O type I O type II O neither O both