Probability Problems( Week 47 Practice) 1. The probability of finding a bulb with some kind of defect in a batch of improperly produced bulbs is . Which of the following could NOT be the number of bulbs in the batch? 2. A box contains only red T-shirts, blue T-shirts, and green T-shirts. The probability of randomly selecting a non-red T-shirt from this box is , and the probability of randomly selecting a blue T-shirt is . Which of the following could be the total number of T-shirts in the box? 3. The probability of having head up is of the probability of having tail up in tossing an imperfect coin. What is the probability of having head up in any random toss of the coin? 4. A spinner shown in the diagram has 10 equal sections. The probability of the pointer falling into each section is the same (Assume the pointer will never fall on a line between two sections). What is the probability that the product of the two numbers that occur in two tries is an even number?
5. A spinner shown in the diagram has 11 equal sections. The probability of the pointer falling into each section is the same (Assume the pointer will never fall on a line between two sections). What is the probability that the sum of the two numbers that occur in two tries is an odd number?
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