Answer:
2
Step-by-step explanation:
1.95 rounds up to 2 because the 5 rounds 9 up to 10, which is equivalent to 1.0 in this case, and that makes the answer 2.
Step-by-step explanation:
can u upload image?????? ;-;
Answer:
18
Step-by-step explanation:
Answer:
Option C: 11.7%
Step-by-step explanation:
The number of elements in sample space when a coin is flipped 10 times will be:
![n(S) = 2^{10} \\= 1024](https://tex.z-dn.net/?f=n%28S%29%20%3D%202%5E%7B10%7D%20%5C%5C%3D%201024)
Let A be the event that the tails appear 7 times:
Then,
![C_{(n,k)}=\frac{n!}{(k!)(n-k)!} \\where\\n=population\\k=picks\\In our case, k =7\\and\\n=10\\C_{(10,7)}= \frac{10!}{(7!)(10-3)!}\\= 120\\So, \\P(A) = \frac{n(A)}{n(S)} \\P(A) = \frac{120}{1024} \\= 0.1171\\](https://tex.z-dn.net/?f=C_%7B%28n%2Ck%29%7D%3D%5Cfrac%7Bn%21%7D%7B%28k%21%29%28n-k%29%21%7D%20%5C%5Cwhere%5C%5Cn%3Dpopulation%5C%5Ck%3Dpicks%5C%5CIn%20our%20case%2C%20k%20%3D7%5C%5Cand%5C%5Cn%3D10%5C%5CC_%7B%2810%2C7%29%7D%3D%20%5Cfrac%7B10%21%7D%7B%287%21%29%2810-3%29%21%7D%5C%5C%3D%20120%5C%5CSo%2C%20%5C%5CP%28A%29%20%3D%20%5Cfrac%7Bn%28A%29%7D%7Bn%28S%29%7D%20%5C%5CP%28A%29%20%3D%20%5Cfrac%7B120%7D%7B1024%7D%20%5C%5C%3D%200.1171%5C%5C)
Converting into percentage:
![P(A) = 0.1171*100=11.7%](https://tex.z-dn.net/?f=P%28A%29%20%3D%200.1171%2A100%3D11.7%25)
So, option C is correct ..