3. A box contains 15 resistors. Ten of them are labeled 50 ohms and the other...

3. A box contains 15 resistors. Ten of them are labeled 50 ohms and the other ﬁve are labeled 100 ohms. a. What is the probability that the ﬁrst resistor is 100 ohms? b. What is the probability that the second resistor is 100 ohms, given that the ﬁrst resistor is 50 ohms? c. What is the probability that the second resistor is 100ohms, given that the ﬁrst resistor is 100 ohms?

4. Refer to Exercise 3. Resistors are randomly selected from the box, one by one, until a 100ohm resistor is selected. a. What is the probability that the ﬁrst two resistors are both 50 ohms? b. What is the probability that a total of two resistors are selected from the box? c. What is the probability that more than three resistors are selected from the box?

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orchestra answered 1 year ago

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