Description
Below I have attached the link to a worksheet on Binomial Problems Using Two Methods. Please complete the worksheet showing ALL your work.
Explanation & Answer
here is solution; if any doubt ..do speak to .Regards
Let X be a binomial random variable with n = 20 and p = .3.
A. Write the expression for P(X = 6) in terms of the formula (n/x)(p)^x (1-p)^n-x
, then evaluate it using your calculator.
P( X 6) 20 C6 0.3 (1 0.3) 206 0.1916
6
B. Using probability notation, P(X = x), write out all the probabilities you'd need
to add up in order to calculate P(X < 6), and then evaluate it using your
calculator.
5
P( X 6) 20 C n 0.3 (1 0.3) 20n
n
n 1
0.0008 0.0068 0.0716 0.1304 0.1789
0.4164
C. For part B, why did you ...
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