sarahbear3 sarahbear3

16-02-2017
Mathematics

contestada

Can someone help me solve A and B? I'm confused:(

Can someone help me solve A and B Im confused class=

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sheheryar91 sheheryar91

16-02-2017

p(a or b)= p(a)+p(b)-p(a and b)
0.7=0.6+p(b)-0.3
p(b)=0.4

p(a or b)= p(a)+p(b)-p(a and b)
=0.6+0.4-0.3
=0.7

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