The standard deviation is 19.91.
To find the standard deviation is a binomial distribution, you have to take the square root of the total number multiplied by the percent and its compliment.
Our expression will be:

This will evaluate to about 19.91.
Answer:
209.3
Step-by-step explanation:
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that said, check your calculator for a button of [ ₙCᵣ ], and you can use that as well.
Answer:
8 fits the equation
Step-by-step explanation:
hope this helps
Answer:
A 45/28
Step-by-step explanation: because a tangnt means a a straight line or plane that touches a curve or curved surface at a point, but if extended does not cross it at that point. so 45 and 28 are on it so it has to be A