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Hi Dave, I was looking at the connection among the option delta, N(d1) and N(d2). Is the connection "exact"? i.e. if the delta of a call option = 0.25, does that mean N(d1) = 0.25? Also, we know the delta of a put option is always negative. The question is, if N(d2) = 1 - N(d1) and the...

26. Let Z be a standard normal random variable. An event X is defined to happen if either z takes a value between -1 and 1 or z takes anyvalue greater than 1.5. What is the probability of event X happening if N(1) = 0.8413, N(0.5) = 0.6915 and N(-1.5) = 0.0668, where N() is the cumulative...