Question

see attachment

Answer 1

P(G or D) = P(G) + P(D) - P(G and D)

Plug in what you know from above and solve for what you want (P(D)).

Answer 2

Its 0.35 I submitted the answer. But its wrong. Cos that's what I exactly did

Answer 3

Which of the following statement is true ?
a G and C are independent
b. G and D are independent.
c. C and D are independent.
D. None of the three pairs of events are independent.

Answer 4

do you know that everyone purchases something?

Answer 5

Sorry I don't really u dear stand your question.

Answer 6

*understand

Answer 7

P(G or C or D) = P(G) + P(C) + P(D) - P(G and C) - P(G and D) - P(C and D) + P(G and C and D). If you knew that everyone bought at least 1 thing then P(G or C or D) = 1 and you could determine P(D) from the equation.

for the independence question, you really need P(G), P(C) and P(D).
if two events, A & B, are independent, then P(A and B) = P(A)*P(B)

Answer 8

i think that b/c there are 3 events that
P(G or D)= P(G) + P(D) - P(G and D) + P(G and D and C)

Answer 9

you there?

Answer 10

Hi I asked the TA. She said the first formula is correct. So idk. I ll email my prof now. Maybe there is smtg wrong with the system

Answer 11

i think that b/c there are 3 events that
P(G or D)= P(G) + P(D) - P(G and D) + P(G and D and C)

Answer 12

So its gonna be 0.34?

Answer 13

if you draw a venn diagram you'll see why this should be the case