A major razor blade manufacturer advertises that its twin-blade disposable razor "gets you lots more shaves" than any single-blade disposable razor...

A major razor blade manufacturer advertises that its twin-blade disposable razor "gets you lots more shaves" than any single-blade disposable razor on the market. A rival company that has been very successful in selling single-blade razors plans to test this claim. Independent random samples of eight single-blade users and eight twin-blade users are taken, and the the number of shaves that each gets before indicating a preference to change blades is recorded. Do the data support the twin-blade manufacturers claim? a=.05. This is a t-test independent samples. Also what is the 5 step Hypothesis Test and conclusion?

H0:There is no significant difference between the number of shaves by single blade razorand twin blade razor.H1: The number of shaves by twin blade razor is significantly more than single blade...