Answer:
Step-by-step explanation:
All you need do is set up a table with three points
x y
2 3- 0.5*2 = 2
0 3
6 0
Now plot the 3 points. You should get something that looks like the graph I downloaded for you.
Reversing coins there are n coins, each showing either heads or tails. we would like all the coins to show the same face. what i
1 answer:
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INFORMATION:
We know that:
- stack of mail consists of 8 bills, 10 letters, and 6 advertisements.
- One piece of mail is drawn at random and put aside. Then a second piece of mail is drawn.
And we must find P (both are letters)
STEP BY STEP EXPLANATION:
To find the probability, we need to know that we have two events. First, when one piece of mail is drawn at random and put aside and, second, when a second piece of mail is drawn.
These two events are dependent. If A and B are dependent events, P(A and B) = P(A) • P(B after A) where P(B after A) is the probability that B occurs after A has occurred.
So, first
- Probability of A (the first piece is letter)
- Probability of B after A
Since A already occurred and one piece of the mail was drawn (a letter), now in total we would have 9 letter and 23 total pieces
Finally, replacing in the initial formula
Finally, the probability would be 0.1630
ANSWER:
P (both are letters) = 0.1630