Question: Consider the time to recharge the flash in cell phone cameras as in example 3-2. Assume that the probability that a camera passes the test

Consider the time to recharge the flash in cell phone cameras as in example 3-2. Assume that the probability that a camera passes the test is 0.8, and the cameras perform independently. Determine the following:
A. Probability that the second failure occurs on the tenth camera tested.
B. Probability that the second failure occurs in tests of four or fewer cameras.
C. Expected # of cameras tested to obtain the third failure.

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