Chance of seed growing into healthy plant: 0.65
Chance of seed NOT growing into a healthy plant: 0.35
To answer this question, we will use the nCr button on the calculator.
In this situation, n = 8 and r = 1.
If 1 seed doesn't grow, then 7 seeds will grow. So will raise 0.65 to the 7th power and 0.35 to a power of 1
7 seeds grow, so we use the 7th power
1 seed doesn't grow, so we use power 1 :
So the answer is:
⁸C₁ × (chance of successful growth)⁷ x (chance of Unsuccessful growth)¹
= ⁸C₁ × 0.65⁷ × 0.35¹
= 0.137 (3sf)
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Answer:
Probability that exactly one seed doesn't grow is:
0.137
