Suppose we roll a fair six-sided die and sum the values obtained on each roll, stopping once our sum exceeds 376. Approximate the probability that at least 100 rolls are needed to get this sum.
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if we need atleast 100 rolls to make sum exceeds 376 ..this means that 99 rolls make sum less than 376 ...we use this to find probability..
And here value of n is large , so we approximate this by normal distribution
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