contestada

A company claims that its tablet computers have an average recharge time of 3 hours. Using a random sample of 50 company tablet computers, a consumer group determines a mean recharge time of 2.5 hours with a standard deviation of 0.3 hours.

A company claims that its tablet computers have an average recharge time of 3 hours Using a random sample of 50 company tablet computers a consumer group determ class=