Answer:
M=-1/2
Step-by-step explanation:
Answer:
25
Step-by-step explanation:
40/24 = x/15
x = 15•40/24
x = 25
Try this solution (see the attachment).
Title:
<h2>See the explanation.</h2>
Step-by-step explanation:
The coin is to be flipped 2000 times.
The probability of getting a head is 0.3.
It is given that, we need to get a head in between 575 and 618 times.
If we will get 575 heads then we will get (2000 - 575) tails.
Hence, if we take that we want to get n times head, then we will get (2000 - n) times tail.
The probability of not getting a head is (1 - 0.3) = 0.7.
The probability of getting n times head is
.
The required probability is ∑
, where
.
Answer:
I'm not completely sure, but i think 2 hours.