11. Discrete Probability Distributions
Interactive practice questions
Consider the table.
| $x$x | $0$0 | $1$1 | $2$2 | $3$3 | $4$4 |
|---|---|---|---|---|---|
| $P$P$($($X=x$X=x$)$) | $0.1$0.1 | $0.45$0.45 | $0.15$0.15 | $0.05$0.05 | $0.25$0.25 |
a
Does the table represent a discrete probability distribution?
Yes
A
No
B
b
What is the most likely outcome for the random variable $X$X?
c
Calculate $E\left(X\right)$E(X).
Easy
2min
Which of the following is the notation for the sample mean?
Easy
< 1min
Which of the following is the notation for the population mean?
Easy
< 1min
A population is a selection of some of the sample.
Easy
< 1min
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