Answer: 8.22
Step-by-step explanation:
For any binomial event , the formula to calculate the standard deviation of the possible outcomes is given by :-
[tex]\sigma=\sqrt{p(1-p)n}[/tex], where p is the probability of success and n is the number of trials.
Given: The probability of success p = 0.1
The number of trials = 750
Now, the standard deviation of the possible outcomes will be :-
[tex]\sigma=\sqrt{0.1(1-0.1)750}\\\\\Rightarrow\sigma=8.21583836258\approx8.22[/tex]
