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The probability that a radish seed will germinate is 0.7. A gardener plants seeds in batches of 8. Find the standard deviation for the number of seeds germinating in each batch.

1 Answer

7 votes

Answer:


SD = 1.296

Explanation:

Given


n=8 --- batches


p =0.7 --- probability that a seed germinates

Required

Determine the standard deviation (SD)

This is calculated as:


SD = √(np(1-p))

Substitute values for n and p


SD = √(8 * 0.7 * (1-0.7))


SD = √(8 * 0.7 * 0.3)


SD = √(1.68)


SD = 1.296

The standard deviation is approximately 1.296

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