The probability of it landing heads the second time, given that it landed heads the first time, is the expected value of the PDF: . Expected value remember is:
- $ \operatorname{E}(X) = \int_{-\infty}^\infty x f(x)\, \operatorname{d}x . $
The probability of it landing heads the second time, given that it landed heads the first time, is the expected value of the PDF: . Expected value remember is: