| $X=x$ | $1$ | $2$ | $3$ | $4$ |
| $P(X=x)$ | $0.1$ | $0.2$ | $0.3$ | $0.4$ |
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| $X = x$ | $0$ | $1$ | $2$ | $3$ |
| $P(X = x)$ | $K$ | $K + \frac{1}{7}$ | $2K$ | $\frac{2}{5}$ |
| $X = x_i$ | $0$ | $1$ | $2$ | $3$ |
|---|---|---|---|---|
| $P(X = x_i)$ | $\frac{1}{8}$ | $\frac{3}{8}$ | $3K$ | $K$ |
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