Fill in the blanks:
A manufacturer gets a shipment of 600 batteries of which 70 are defective. The store manager wants to be able to test random samples in future shipments. She tests a random sample of 20 batteries in this shipment to see whether a sample of that size produces a reasonable inference about the entire shipment. The numbers 1‐70 represent defective batteries.


She generates this list: 33, 413, 113, 564, 38, 266, 344, 476, 486, 177, 26, 331, 358, 131, 352, 227, 31, 253, 31, 277.

Does the sample produce a reasonable inference?


The sample has [blank] defective batteries, or 25%.
The sample [does/does not] produce a reasonable inference because about [blank]% of the batteries in the shipment are defective.