Answer
a. 0.31
b. 0.48
c. 0.31
Work Step by Step
a. P(TV and no fridge) = P(TV) - P(TV and fridge)
= 0.52 - 0.21
= 0.31
b. P(TV or fridge) - P(TV and fridge) = P(TV) + P(fridge) - P(TV and fridge) * 2
= 0.52 + 0.38 - 0.21 * 2
= 0.9 - 0.42
= 0.48
c.P(no TV and no fridge) = 1 - P(TV or fridge) = 1 - (P(TV) + P(fridge) - P(TV and fridge)) = 1 - P(TV) - P(fridge) + P(TV and fridge)
= 1 - 0.52 - 0.38 + 0.21
= 0.31
