Replacement times for TV sets are normally distributed with a mean of 8.2 years and a standard deviation of 1.1 years(bases data from "Getting Things Fixed", Consumer Reports). Find the probability that 40 randomly selected TV sets will have a mean replacement time less than 8.0 years.
Please help me. Thanks in advance!

typically if you want , you would actually put questions here for us to you. but hey, that's just me. maybe someone will magically answer the questions for you without knowing what they are.

c: lkllmn.

hope it's you

1^3 + 2^3 + 3^3 +4^3 = (1+2+3+4)^2

step-by-step explanation:

i am only able to answer the first part. i am not sure about the second part. sorry