A compact disc is designed to last an average of 4 years with a standard deviation of 0.8 years. What is the probability that a CD will last less than 3 years?

1.11%
10.56%
86.65%
100%
98.38%

i'm not sure i quite understand, could you provide more information?

answer: what statements

step-by-step explanation if you write the statements down then i could you.

80x^8−68x^6+16^5−20x^4−4x^3+8x^2

hope i'm right lol

df =

both have same length