Let x1; x2; x3 and x4 be independent lifetimes of memory chips. suppose that xi n(300; 102) for i = 1; 2; 3; 4 where the parameters are measured in hours. compute the prob- ability that at least two of the four chips lasts at least 310 hours.

x

step-by-step explanation:

80x^8−68x^6+16^5−20x^4−4x^3+8x^2

hope i'm right lol

nope.   happens to me as well.

-aparri

take the logarithm of both sides (the base of the log doesn't matter):

apply the exponent property - this says that :

distribute the log terms on both sides:

group like terms together:

divide through both sides by the coefficient on :

you can do some additional rewriting here using the properties of the logarithm to simplify things if you like: