on a candy production line, 3% of bags are overfilled. an employee randomly selects 100 bags and finds that 5% are overfilled. a second employees takes another random sample of 250 bags and finds that 2% are overfilled. which of the following explains why there is a difference between the two percentages?
- Random error; the numbers were different due to variability inherent in sampling. - The samples were not random samples. - Both samples suffered from non-response bias.
- The sample sizes were both too small, which is why they both obtained figures different than 3%
