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3 years ago

5

Does anybody know how to do problems 19 and 21?

1 answer:

Nataliya [291]3 years ago

8 0

I only know #19
Boots=x
Shoes=x-15
3(x-15)+2x=120
3x-45+2=120
5x-45+2x=120
5x=165
X=33
Boots=$33

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$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

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