Suppose the average operating time per charge for a 6volt la

Suppose the average operating time per charge for a 6-volt laptop battery is currently 4.0 hours. SWET Electronic Technology claims it has developed a new 6-volt battery that has an average charge life that exceeds 4.0 hours. Test this claim.

H0:\\mu

H1:\\mu

Solution

Null, battery that has an average charge life is equals 4.0 hours H0: U=4
Alternate, battery that has an average charge life that exceeds 4.0 hours H1: U>4