Lia has a bag with 3 spotted, 4 plaid, 1 rainbow, and 4 plain blocks. She draws a block without looking, records what she gets,
and puts the block back in the bag. If she repeats this process 132 times, about how many times should she expect to get a plaid block? I need this right now please. I will give a lot of points.
1 answer:
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Answer:
= 84/177100
Step-by-step explanation:
Here 9 mid sized
16 compact cars
selected = 6
= 84/177100
for 3 mid sized
3 compact cars
then
3Cx/9Cx
divide by 3 we get
Cx/3Cxtaking Cx coomon
it become Cx =1/3 hence the probability is 1/3
Notice the picture below
what we have, is really an angle, encroached by two sides
thus, use the Law of Cosines
what we have, is really an angle, encroached by two sides
thus, use the Law of Cosines