2 The Ginko biloba was thought to be extinct until early in

2) The Ginko biloba was thought to be extinct until early in the 20th century when a population was found in China. Now this tree is cultivated as an ornamental tree all over the world. 35% of the trees have variegated (multicolored) leaves, while the rest have normal green leaves. 70% of the trees have white flowers and the remainder have pink flowers. Only 20% of the trees have variegated leaves and white flowers.

What is the probability that a randomly collected sample will have variegated leaves OR white flowers.

What is the probability that a randomly collected sample will have white flowers and normal green leaves?

What is the probability that a randomly collected sample will have normal green leaves and pink flowers.

What if a tree has variegated leaves but has not bloomed yet so we don’t know what color the flowers are? ….what if? (You can figure this out by calculating the probability of white flowers given variegated leaves)

Solution

What is the probability that a randomly collected sample will have variegated leaves OR white flowers.

P( variegated leaves) + P( white flowers) - P( variegated leaves and white flowers)

0.35 + 0.70 - 0.20

0.85

What is the probability that a randomly collected sample will have white flowers and normal green leaves?

P( white flowers) + P (gren leaves) - P( white flowers or green leaves)

0.70 + (1-0.35) - 0.70

0.35

What is the probability that a randomly collected sample will have normal green leaves and pink flowers.

P( green) + P( pink) - P( green or pink)

0.65 + 0.30 - 0.80

0.15

for the last literal

I can gladly help you but you should post it in a new question