A couple has two children. What is the probability that both are girls given that the oldest is a girl? What is the probability that both are girls given that one of them is a girl?

Standardization of Turnip Peroxidase Enzyme f(x) = 0x + 0.21 f(x) = 0x + 0.1 f(x) = 0x + 0.06 0.5 mL Extract Linear (0.5 mL Extract) 1.0 mL Extract Linear (1.0 mL Extract) 2.0 mL Extract Linear (2.0 mL Extract) Effect of Temperature on Turnip Peroxidase Enzyme f(x) = 0.01x + 0.18 f(x) = 0.01x + 0.12 f(x) = 0x + 0.13 f(x) = 0x + 0.1 0 ºC Linear (0 ºC) 24 ºC Linear (24 ºC) 33.5 ºC Linear (33.5 ºC) 53 ºC Linear (53 ºC) 75.5 ºC Linear (75.5 ºC)