Statıstıcs I Deneme Sınavı Sorusu #821796
There are 6 red and 4 blue balls in a box. One randomly chooses 4 balls from the box without replacing it. What is the probability of choosing at most 1 red ball out of these 4 balls?
|
0.12 |
|
0.18 |
|
0.24 |
|
0.36 |
|
0.48 |
Yanıt Açıklaması:
We have to compute zero red balls and 1 red ball.
P(x=0)=C(4,0)*0.60*0.44=0.44
P(x=1)=C(4,1)*0.61*0.43=2.4*0.43
P(x=0)+P(x=1)=2.4*0.43+0.44=0.43(2.4+0.4)=2.8*0.43=0.1792=0.18
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