Answer:
The statement is true about whether A and B are independent eventa is fourth option:
A and B are not independent events because P(A/B)=0.375 and P(A)=0.25
Step-by-step explanation:
Let A be the event that the person rides the bus to school, then:
P(A)=75/300
P(A)=0.25
Let B be the event that the person has 3 or more siblings, then:
P(B)=24/300
P(B)=0.25
P(A/B)=9/24
P(A/B)=0.375
Like P(A/B)=0.375 is different to P(A)=0.25 the events are not independent
Answer. Fourth option:
A and B are not independent events because P(A/B)=0.375 and P(A)=0.25
Answer:
![C)\:\:\frac{\sqrt 2}{ 2 }](https://tex.z-dn.net/?f=C%29%5C%3A%5C%3A%5Cfrac%7B%5Csqrt%202%7D%7B%202%20%7D%20)
Step-by-step explanation:
![\sin \bigg( \frac{3\pi}{4} \bigg) \\ \\ = \sin \bigg( \pi - \frac{\pi}{4} \bigg) \\ \\ = \sin \bigg(\frac{\pi}{4} \bigg) \\ \\ = \frac{1}{ \sqrt{2} }\\\\= \frac{\sqrt 2}{ 2 }](https://tex.z-dn.net/?f=%20%5Csin%20%5Cbigg%28%20%20%20%5Cfrac%7B3%5Cpi%7D%7B4%7D%20%5Cbigg%29%20%5C%5C%20%20%5C%5C%20%20%3D%20%20%5Csin%20%5Cbigg%28%20%5Cpi%20%20%20-%20%20%20%5Cfrac%7B%5Cpi%7D%7B4%7D%20%5Cbigg%29%20%5C%5C%20%20%5C%5C%20%20%3D%20%20%5Csin%20%5Cbigg%28%5Cfrac%7B%5Cpi%7D%7B4%7D%20%5Cbigg%29%20%5C%5C%20%20%5C%5C%20%20%20%3D%20%20%5Cfrac%7B1%7D%7B%20%5Csqrt%7B2%7D%20%7D%5C%5C%5C%5C%3D%20%20%5Cfrac%7B%5Csqrt%202%7D%7B%202%20%7D)
7^2+5^2= 74 now you have to square root 74 which is 8.60233 or 8.6
Answer:
44
Step-by-step explanation: