Respuesta :

Answer:

screeeeeeeeeeredc vbggrewdsc

Step-by-step explanation:cdscx de2wqsax

wewdsnswercwdsx

Answer:    P(F) = 0.35

==================================

Work Shown:

P(E or F) = P(E) + P(F) - P(E and F)

0.55 = 0.40 + P(F) - 0.20

0.55 = P(F) + 0.20

P(F) + 0.20 = 0.55

P(F) = 0.55 - 0.20

P(F) = 0.35

---------

note: Sometimes you may see the formula as

P(E and F) = P(E) + P(F) - P(E or F)

but it's an equivalent form to the first equation above.

ACCESS MORE
EDU ACCESS
Universidad de Mexico