An IT department collects 9 used USB flash drives from an employee.The employee reports that 4 of them are defective.

IT randomly selects 3 USB flash drives, one after the other, to test.

1, Draw a tree diagram to show the possible outcomes of this experiment.Be sure to figure all the joint probabilities next to the tree diagram.

2, What is the probability of selecting a defective USB flash drivefollowed by two more defective flash drives? (Enter as a decimal number with four decimal places, e.g., .5674 not 56.74%)

Remember, for all calculations in this project do not convert fractions to decimals until the final answer.

3, What is the probability of selecting at least one defective USB flash drive? (Enter as a decimal number with four decimal places, e.g., .5674 not 56.74%)

Use your tree diagram to help you answer this question.