1. A factory makes bicycles. Out of 300 bicycles, 2 were found to have
defective brakes.
a. What is the experimental probability that the next bike
manufactured will have defective brakes?

b. Predict how many bikes out of 2,100 will have defective brakes.

2. A factory makes light bulbs. Out of 400 light bulbs, 18 were found to
have defective filaments.
a. What is the experimental probability that the next light bulb
manufactured will have a defective filament?

b. Predict how many bulbs out of 6,000 will have defective filaments.

3. A factory makes ceramic bowls. Out of 200 bowls, 8 were chipped.
a. What is the experimental probability that the next bowl made will
not be chipped?

b. Predict how many bowls out of 10,000 will be chipped

4. A manufacturer of sparkplugs has a goal of producing less than 2%
defective ones. Of the last 8,000 sparkplugs, 13 were defective.
a. What is the experimental probability that the next sparkplug will be
defective?

b. Did the manufacturer reach its goal? Explain.

5. A manufacturer of electric switches has a goal of producing less than
1.5% defective switches. Of the last 300 switches, 23 were defective.
a. What is the experimental probability that the next switch made will
be defective?