An experiment consists of rolling a fair die 100 times.

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If this experiment is repeated, what is the sampling distribution of the proportion of the 100 tosses that land with one spot in the top face?

the P(getting a 1) = 1/6

how do I find the proportion value if idk how many times of getting a 1? do I understand this question correctly?

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It's a binomial

$$P(X=x/100)=\binom{100}{x}\Big(\frac{1}{6}\Big)^{x}\Big(\frac{5}{6}\Big)^{100-x}$$

$x=0,1,2...,100$