Urgent help needed (1 Viewer)

[kkk579]

Does anyone mind writing out the working out for these 2 questions? I’ve tried them multiple times but can’t seem to get the right answer and i’m really stuck on how to do them. Any help is appreciated, it won’t take long for those who know how to do it. Thank you so much!!

 

[kkk579]

bump

 

[Yes99]

I read questions 14 and 15 very well. I am not that confident but my answers are;

Q24. 1/12 (only way you can pick up $20 is picking two $10, so 3 cards out of 9 cards multiply by 2 cards out of Eight cards left

 

[kkk579]

I read questions 14 and 15 very well. I am not that confident but my answers are;

Q24. 1/12 (only way you can pick up $20 is picking two $10, so 3 cards out of 9 cards multiply by 2 cards out of Eight cards left

Hey! i don’t need help with 15, just 14 and 24

 

[lolcti]

question 24 is 1/12

 

[Yes99]

Hey! i don’t need help with 15, just 14 and 24

I read Q14 now. 9 seeds?
0.333333.... is the probability when I plant 3 seeds, so 9 seeds. if i plant 8, it might be bit less than 0.9

 

[cossine]

Hey! i don’t need help with 15, just 14 and 24

14 use complementary probability.

(2/3)^n <= 0.1 find n

 

[kkk579]

Nvm guys i figured out q14

 

[kkk579]

question 24 is 1/12

Somehow the answer key says 3/7

 

[kkk579]

Somehow the answer key says 3/7

the written w/o is:
P(A and B)=3/9 x 2/8 + 2/9 x 3/8 x 2 = 1/4
P(B) = P(at least one $10)
=1-P(no $10)
=1-(6/9 x 5/8)
=7/12

P(A|B)= 1/4/7/12=3/7

w/o don’t make sense to me tbh

 

[lolcti]

the written w/o is:
P(A and B)=3/9 x 2/8 + 2/9 x 3/8 x 2 = 1/4
P(B) = P(at least one $10)
=1-P(no $10)
=1-(6/9 x 5/8)
=7/12

P(A|B)= 1/4/7/12=3/7

w/o don’t make sense to me tbh

huhhh? what textbook is this it might be cause of that

 

[kkk579]

huhhh? what textbook is this it might be cause of that

Nah it’s sols from a tutor