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 Nov20 asked A die is rolled. A coin is flipped four times. Find the probability that the number on the die is twice the number of heads from the coin flips. Nov8 accepted Probability a virus damages 800-850 files of 2400 files with an independent probability of 35%? Nov8 revised Finding probability 400 components last 5012 or less hours using standard deviation? edited body Nov8 asked Finding probability 400 components last 5012 or less hours using standard deviation? Nov8 asked Probability a virus damages 800-850 files of 2400 files with an independent probability of 35%? Nov7 accepted How to find the probability of variables with joint density? Nov6 comment How to find the probability of variables with joint density? Thanks, I understand part 3 now but could you help me a bit more on part 2? Would I just take the integral in respect to x from -1 to 1 and y from 0 to .6? Nov6 accepted How to find probability based on percent of orders recieved and exponential amount of time to complete per order? Nov6 asked How to find the probability of variables with joint density? Nov6 comment How to find probability based on percent of orders recieved and exponential amount of time to complete per order? I'd assume that as soon as the order arrives the specialists works nonstop until completion. Nov6 accepted How to find time it takes to reboot a system which is a continuous variable with a density function? Nov6 comment How to find time it takes to reboot a system which is a continuous variable with a density function? Thanks I didn't realize calculating C was essential to the second part which is what must have been throwing me off! Nov6 asked How to find probability based on percent of orders recieved and exponential amount of time to complete per order? Nov6 asked How to find time it takes to reboot a system which is a continuous variable with a density function? Oct9 awarded Supporter Oct9 accepted Let P(X=3)=0.4 and P(Y=2)=0.5. Find P(X=3,Y=2). Oct9 awarded Scholar Oct9 revised Let $P(X=1)=0.6$ and $P(X=1,Y>=5)=0.2$. Find $P(X=1,Y<5)$. added 8 characters in body Oct9 revised Probability of an unprepared student passes a quiz, 3 of 7 must be correct with 4 possible answers each? added 10 characters in body Oct9 comment Probability of an unprepared student passes a quiz, 3 of 7 must be correct with 4 possible answers each? Then how would you calculate at least 3?