Answer:
6.5 minutes
Step-by-step explanation:
A.
It cost 9 dollars per person so 9x
and you need to add the additional 3 dollars for parking
so y = 9x + 3
total entry parking
It's 0,3 hope this is right!!!
Answer:
The probability of getting exactly 2 soles is 0.375.
Step-by-step explanation:
The question is:
If you toss a fair coin 4 times, what's the probability
that you get exactly 2 soles?
Solution:
A fair coin has two parts.
On tossing a coin once there is 50-50 odds of both the sides.
So, the probability of one side is, <em>p</em> = 0.50.
It is provided that a fair coin is tossed <em>n</em> = 4 times.
The event of any of the sides showing up after the toss are independent of each other.
The random variable <em>X</em> defined as soles, follows a Binomial distribution with parameters <em>n</em> = 4 and <em>p</em> = 0.50.
The probability mass function of <em>X</em> is:
![P(X=x)={4\choose x}\ (0.50)^{x}\ (1-0.50)^{4-x};\ x=0,1,2,3,4](https://tex.z-dn.net/?f=P%28X%3Dx%29%3D%7B4%5Cchoose%20x%7D%5C%20%280.50%29%5E%7Bx%7D%5C%20%281-0.50%29%5E%7B4-x%7D%3B%5C%20x%3D0%2C1%2C2%2C3%2C4)
Compute the probability of getting exactly 2 soles as follows:
![P(X=2)={4\choose 2}\ (0.50)^{2}\ (1-0.50)^{4-2}](https://tex.z-dn.net/?f=P%28X%3D2%29%3D%7B4%5Cchoose%202%7D%5C%20%280.50%29%5E%7B2%7D%5C%20%281-0.50%29%5E%7B4-2%7D)
![=6\times 0.25\times 0.25\\\\=0.375](https://tex.z-dn.net/?f=%3D6%5Ctimes%200.25%5Ctimes%200.25%5C%5C%5C%5C%3D0.375)
Thus, the probability of getting exactly 2 soles is 0.375.