SOLUTION: 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.

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Question 979534: 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.
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
This is a binomial distribution problem

Standard deviation:

sigma+=+sqrt%28n%2Ap%2A%281-p%29%29

sigma++=+sqrt%2820%2A0.7%2A%281-0.7%29%29

sigma++=+2.04939015319191 (this is approximate)