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2. In a certain engineering class, 40% of the students have an iPad, 65% have an...

2. In a certain engineering class, 40% of the students have an iPad, 65% have an iPhone and 30% have both.

  1. What is the probability that a randomly chosen student has either an iPad or an iPhone?
  2. What is the probability that a randomly chosen student has only an iPad or only an iPhone?
  3. Given that a student has an iPhone, what is the probability that he has also an iPad?
Math   Statistics-And-Probability   
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Answer #1

Define the events and .

The following probabilities have been defined.

a) The probability that a randomly chosen student has either an iPad or an iPhone is

b)  The probability that a randomly chosen student has only an iPad or only an iPhone is

c) The probability that he has also an iPad given that a student has an iPhone is

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