Question

how to write a formula for the statement the probability that John owns a dog given that Sally own a dog is 0.6...

Answer 1

Let J be the event 'John owns a dog' and let S be the event 'Sally owns a dog'.
The probability that John owns a dog given that Sally owns a dog can be written as:
\[\large P(J|S)\]

Answer 2

And then you would P(J/S)=P(A intercept B)/S correct?

Answer 3

\[\large P(J|S)=\frac{P(J \cap S)}{P(S)}=0.6\]

Answer 4

Thank you.

Answer 5

You're welcome :)