The ratio 20/10=5/n. What does n equal?
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Answer: 3.416
Step-by-step explanation:
Let Event R = drawing a red bead
Event W = drawing a white bead
As per given : P(R) = 0.66 and P(W)=0.34
Also, P(R)+P(W)=0.66+0.34=1.00
It means , there are only two events.
In Binomial distribution (For two independent event) , the standard deviation is given by :-
, where n= number of trials , p = probability of getting one event , q = probability of getting other event.
For current situation , n= 52 , p=0.66 , q=0.34
Substitute the corresponding values , we get
Hence, the standard deviation is 3.416.