SOLUTION: Every day, Quinn either gains two pounds (with probability 12) or loses one pound (with probability 12). Each day these probabilities are independent of whether she lost or gained

Question 1124878: Every day, Quinn either gains two pounds (with probability 12) or loses one pound (with probability 12). Each day these probabilities are independent of whether she lost or gained weight any other day.
At the end of four days, what's the probability that Quinn will weigh one pound less than she did before?

At the end of four days, what's the probability that Quinn will weigh one pound more than she did before?

Enter your answers as whole numbers or fractions in lowest terms.
Answer by ikleyn(52787) (Show Source): You can put this solution on YOUR website!
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The probability 12 is too much to be true . . .

Therefore, the rest of the post is suspicious, too.

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