A light bulb has a lifetime X that is exponentially distributed with a mean 340 hours. Find the probability that the bulb lifetime exceeds 220 hours when you know it already exceeded 100 hours ?

Given the choice between receiving $1.000.000 in one month or a single penny-doubled everyday for the period of one month; which option would you choice? show your work to support your answer. (assume that 1 month=30 days)

Assemble the proof by dragging tiles to the statements and reasons column

What are the solutions of the equation? 6x^2 + 11x + 4 = 0 a. 4/3, 1/2 b. -4/3, -1/2 c. 4/3, -1/2 d. -4/3, 1/2