The following table gives the probability distribution for a random variable X. x P(x) 2 0.008...
The following table gives the probability distribution for a random variable X.
| x | P(x) |
| 2 | 0.008 |
| 3 | 0.076 |
| 4 | 0.264 |
| 5 | 0.412 |
| 6 | 0.240 |
a) Find the mean of X. (decimal answer, rounded 1 decimal place)
b) Find the standard deviation of X. (decimal answer, rounded 3 decimal places)
c) Find the probability that X is 2 or 3. (decimal answer, rounded 3 decimal places)
d) Find the probability that X is at least 4.(decimal answer, rounded 3 decimal places)
e) Identify the shape of the distribution for X. (letter only, choose one)
A) skewed-left
B) skewed-right
C) bell-shaped
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