Question

To inspect manufacturing processes, companies typically examine samples of parts for deficiencies. One company that manufactures ballpoint pens selected samples of 1000 pens on each of 18 days. The company recorded, for each sample of 1000 , the number of defective pens in the sample. Here are their data.

Answer 1

Hello! Let's solve the exercise:

First, let's write the data again:

1 1 2 2 2 3 3 3 5 5 6 6 7 10 10 14 15 18

(a)

$\operatorname{mean}=\frac{\text{sum of all terms}}{\text{ number of terms}}$