Please god help//insurance//probability//standard deviation

Answer:
Number of insurance policy = 10,000
Probability of making a claim = 0.1
Find:
Standard deviation
Computation:
Standard deviation α = √[p(1-p)/n]
Standard deviation α = √[0.1 ( 1-0.1)/10,000]
Standard deviation α = √0.000009
Standard deviation α = 0.003
Hope this helps