Discover Questions

Is it possible to have over 500 biological fathers? For the standard normal curve, find the z-score that corresponds to the 7th decile.? Multiplying two rational numbers with the same signs will always result in a positive number is it true or false? (5x^3)/x^5 =125? The derivative of e^x is e^x, so what if x was replaced with a different letter, like e^t? Is the derivative still the same?