Question: Ethan and Harry are each preparing for a marathon, and the following data is recorded for simulated races: Ethan's Sample:n= 17,x = 164.5,s= 3.5 Harrys

Ethan and Harry are each preparing for a marathon, and the following data is recorded for simulated races:

Ethan's Sample:n= 17,x = 164.5,s= 3.5 Harry"s Sample:n= 17,x = 171.3,s= 2.1

Test whether Ethan and Harry have different true racing time means. The race times are independent and normally distributed. How would I solve this using a 0.05 significance level?

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