2 out of the 12 total are helmets so the probability would be 2/12 which simplifies to 1/6.
Answer:
it is a
Step-by-step explanation:
the sign would still be negative since positive and negative still make negative for both fractions after dividing:
10/-9 would equal -1.1111
-10/9 would equal -1.1111
:) hope that helped
Answer:
1.78 lb
Step-by-step explanation:
Total meat needed = 10 lb
David picks out 3 packages at the supermarket.
Each package weighs
2.73 lb
3.2 lb
2.29 lb
Total weight of the 3 packages = 2.73 lb + 3.2 lb + 2.29 lb
= 8.22 lb
How much more meat does David need?
Amount of meat David needs more = Total meat needed - Total weight of meat picked at the supermarket
= 10 lb - 8.22 lb
= 1.78 lb
David needs 1.78 lb more of meat to complete the total 10 lb meat needed
Answer:
Step-by-step explanation:
Let X be the no of vehicles that require warranty service within I year out of vehicles sold (9) yesterday.
Each vehicle is independent of the other to get warranty service
Hence X is binomial with p=8% = 0.08
So P(X=x) = ![9Cx (0.08)^x (1-0.08)^{9-x} ,x=0,1,2...9](https://tex.z-dn.net/?f=9Cx%20%280.08%29%5Ex%20%281-0.08%29%5E%7B9-x%7D%20%2Cx%3D0%2C1%2C2...9)
![a) P(X=0) = 0.472161\\b) P(x=1) = 0.3695](https://tex.z-dn.net/?f=a%29%20P%28X%3D0%29%20%3D%200.472161%5C%5Cb%29%20P%28x%3D1%29%20%3D%200.3695)
c) ![P(X=2) = 0.1285](https://tex.z-dn.net/?f=P%28X%3D2%29%20%3D%200.1285)
d) Mean = Mean of binomial = np =
![9(0.08) = 0.72](https://tex.z-dn.net/?f=9%280.08%29%20%3D%200.72)
Var (x) = npq = ![0.6624](https://tex.z-dn.net/?f=0.6624)
Std dev = square root of variance = 0.8139
Answer: It's C because It was correct on my test.
If I wrong i'm really sorry
Step-by-step explanation: