Question

Jamal's Seed Emporium claims that 75% of its lily seeds will germinate. Suppose the company's claim is true. Sierra buys a packet with 25 lily seeds from Jamal's Seed Emporium and plants them in her garden. What is the probability that exactly 18 seeds will germinate?

Answer 1

P = 0.1654

Explanation:

Binomial probability:

P = nCr pʳ qⁿ⁻ʳ

where n is the number of trials,

r is the number of successes,

p is the probability of success,

and q is the probability of failure (1−p).

P = ₂₅C₁₈ (0.75)¹⁸ (0.25)²⁵⁻¹⁸

P = 480,700 (0.75)¹⁸ (0.25)⁷

P = 0.1654