need some help.

Question 2 (5 marks) Show your work and draw box(es) around your final answer(s). Use algebraic methods unless otherwise stated. Department Store A offers an extended 3-year replacement warranty on its toasters. The mean lifespan of its toasters is 3.8 years, with a standard deviation of 0.45 Department Store B offers an extended 2-year replacement warranty on its toasters. The mean lifespan of its toasters is 2.6 years, with a standard deviation of 0.31 . Which toaster is more likely to fail before its warranty period is over