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| $X = x$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ |
| $P(X = x)$ | $0.15$ | $0.23$ | $k$ | $0.10$ | $0.20$ | $0.08$ | $0.07$ | $0.05$ |
| $x$ | $0$ | $1$ | $2$ |
|---|---|---|---|
| $P(X=x)$ | $q^2$ | $2pq$ | $p^2$ |
| $X = x_i$ | $0$ | $1$ | $2$ | $3$ | $4$ |
|---|---|---|---|---|---|
| $P(X = x_i)$ | $0.4$ | $0.3$ | $0.1$ | $0.1$ | $0.1$ |
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