The probability that a radish seed will germinate is 0.7. A gardener plants seeds in batches of 20. Find the standard deviation for the number of seeds germinating in each batch.
A) 2
B) 42
C) 4.2
D) 17.6

Question

Quizplus · Accepted Answer

The standard deviation for a binomial distribution is calculated using the formula √(n * p * (1-p)), where n is the number of trials (20 seeds), and p is the probability of success (0.7). Thus, √(20 * 0.7 * 0.3) = √4.2 ≈ 2.05, which rounds to 2.

The Probability That a Radish Seed Will Germinate Is 0