The probability of event a is x, and the probability of event B is y. If the two events are independent, which of these conditions must be true ? __A P(BlA) = y

__B P(Al B) =y

__C P(BlA = x

__D P( and B) = x + y

9514 1404 393

  A  P(BlA) = y

Step-by-step explanation:

When events are independent, the probability of B is the same regardless of any conditioning on A. That is, P(B) = P(B|A) = y.

__

Additional comment

When you write out the formula for conditional probability in this case, you see that ...

  P(B) = P(B|A) = P(A&B)/P(A)

Multiplying by P(A) tells you ...

  P(A)·P(B) = P(A&B) . . . . when A and B are independent

3.4 pizzas

step-by-step explanation:

given is a scatter plot showing number of pizzas sold during weeks for different issues of coupon

y represents number of pizzas sold and x number of coupons issued

y is marked verticaly and x horizontally

the trend line is given as

y =3.4x+43

this says that even when no coupon is issued pizzas sold will be 43

and rate of change of pizza sold for 1 unit of coupon = slope = 3.4

i.e. when x increases by 1 unit y increases by 3.4 units

hence for each additional coupon issued 3.4 pizzas more will be sold

answer: no

step-by-step explanation:

you are only given the cost not the amount of pounds.