Answer
b. The probabilities listed in the table are exact probabilities because it listed all the possible values that the random variable can assume.
c.
i. P(3) = 0.3,
ii. $P(x\geq3)$ = P(3 or 4 or 5) = P(3) +P(4)+P(5) = 0.3+0.2+0.15 = 0.65
iii. $P(2\leq x \leq 4 ) $ = P(2 or 3 or 4) = P(2)+P(3)+P(4) = 0.25+0.3+0.2 = 0.75
iv. $P(x\lt4)$ = P( 1 or 2 or 3) = P(1)+P(2)+P(3) = 0.1+0.25+0.3 = 0.65
Work Step by Step
SEE ABOVE.
