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calebhoover03
30.03.2020 •
Mathematics
G A coin where the probability of heads is 0.3 is flipped 2000 times. Use the normal approximation to the binomial distribution to find the probability of getting between 575 and 618 heads (inclusive).
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Ответ:
Title:
See the explanation.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
.
Ответ:
Step-by-step explanation:
Given
Required
Determine the formula
First, we need to solve common difference (d)
Take n as 2
Represent each function as a sum of the previous
Represent the function as![f(n)](/tpl/images/0790/9739/94b20.png)
Reorder