A certain type of light bulb has an average life of 1500 hours, with a standard deviation of 100 hours. The length of life of the bulb can be closely approximated by a normal curve. An amusement park buys and installs 70,000 such bulbs. Find the total number that can be expected to last less than 1650 hours. Click here to view page 1 of the Areas under the Normal Curve Table. Click here to view page 2 of the Areas under the Normal Curve Table. The number of light bulbs that can be expected to last less than 1650 hours is