A business is deciding whether to buy a new machine. The machine may contribute extra profits of $15,000 or $19,000 or a loss of $1,000, with associated probabilities of 0.2, 0.6 and 0.1 respectively. What is the expected profit? $35,000 $14,300 $19,000 $11,667 Consider the following normal distribution. 120 135 150 Which area represents the probability that: (a) X < 120 (b) x is between 120 and 150 (c) (d) x> 150 X> 120