JUST ter 15 . Statistics Class Activity 15C Using Random Samples 1. At a factory that produces computer chips, a batch of 5000 computer chips has just been pro- duced. To check the quality of the computer chips, a random sample of 100 computer chips is selected to test for defects. Of these 100 chips, 3 were found to be defective. Based on these results, what is the best estimate you can give for the number of defective computer chips in the batch of 5000? Find several different ways to solve this problem, including ways that elemen- tary school children might be able to develop 2. Mr. Lawler had a bag filled with 160 plastic square tiles. The tiles were identical, except that some were yellow and the rest were green. A student in Mr. Lawler's class randomly picked out 20 of the tiles: 4 of the tiles were yellow and the rest were green. Mr. Lawler asked his students to use this information to make their best scientific estimate for the total number of yellow tiles that were in the bag. Mr. Lawler's students had several different ideas. For each of the following initial ideas, discuss the idea and describe how to use it to estimate the total amber of yellow tiles. Which ideas are related? 20 ! 20 ! 20 ! 20 ! 20 ! 20 ! 20 ! 20 JUST ter 15 . Statistics Class Activity 15C Using Random Samples 1. At a factory that produces computer chips, a batch of 5000 computer chips has just been pro- duced. To check the quality of the computer chips, a random sample of 100 computer chips is selected to test for defects. Of these 100 chips, 3 were found to be defective. Based on these results, what is the best estimate you can give for the number of defective computer chips in the batch of 5000? Find several different ways to solve this problem, including ways that elemen- tary school children might be able to develop 2. Mr. Lawler had a bag filled with 160 plastic square tiles. The tiles were identical, except that some were yellow and the rest were green. A student in Mr. Lawler's class randomly picked out 20 of the tiles: 4 of the tiles were yellow and the rest were green. Mr. Lawler asked his students to use this information to make their best scientific estimate for the total number of yellow tiles that were in the bag. Mr. Lawler's students had several different ideas. For each of the following initial ideas, discuss the idea and describe how to use it to estimate the total amber of yellow tiles. Which ideas are related? 20 ! 20 ! 20 ! 20 ! 20 ! 20 ! 20 ! 20