Question: URGENT! Please help! A box in a certain supply room contains 3 407W lightbulbs, 4 607W lightbulbs. and 6 T57W bulbs. Suppose that 3 bulbs

URGENT! Please help!

URGENT! Please help! A box in a certain supply room contains 3

A box in a certain supply room contains 3 407W lightbulbs, 4 607W lightbulbs. and 6 T57W bulbs. Suppose that 3 bulbs are randomly selected without replacement. (Round your answers to 4 deCimal places, if needed.) (a) What is the probability that exactly two at the selected bulbs are rated IVS-M D (b) What is the probability that all three of the selected bulbs have the same rating? D (c) What l5 the probability that one buib of each type is selected? D (Cl) Suppose now that bulbs ale to be selected one by one until a 75-W bulb ls found. What is the probability that it is necessary to examine at least six bulbs? D

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