Aand b are two events. let p(a)=0.4 , p(b)=0.8 , and p(a and b)=0.28 . which statement is true? will give brainliest 1. a and b are not independent events because p(a∣∣b)=p(a) and p(b∣∣a)=p(b) . 2.a and b are not independent events because p(a∣∣b)≠p(a) . 3. a and b are not independent events because p(a∣∣b)=p(b) and p(b∣∣a)=p(a) . 4. a and b are independent events because p(a∣∣b)=p(b) and p(b∣∣a)=p(a) .

In order to determine if the events are independent or not we need to find the conditional probabilities.

The conditional probability of event A, given event B is denoted as P(A|B)



P(A*B) indicates P(A and B)

Using the values, we get:



Since P(A|B) is not equal to P(A) this indicates that occurrence of event B has an impact on the occurrence of event A. This shows that the two events are dependent.

Therefore, the correct option is the second one.
2. A and B are not independent events because P(A∣∣B)≠P(A)

It’s 24.6 after you round to the nearest tenths the answer should be 25.0

The range would be 13 because you’re finding the difference