And the range of allowable values based on an expected mass of 250 grams for which values are allowed to vary by \( 5 \% \).

To find the range of allowable values based on an expected mass of 250 grams with a variation of \( 5\% \), we first need to calculate \( 5\% \) of 250 grams. \[ 5\% \text{ of } 250 \text{ grams} = 0.05 \times 250 = 12.5 \text{ grams} \] Next, we subtract and add this value to the expected mass to find the range: - Lower limit: \[ 250 \text{ grams} - 12.5 \text{ grams} = 237.5 \text{ grams} \] - Upper limit: \[ 250 \text{ grams} + 12.5 \text{ grams} = 262.5 \text{ grams} \] Therefore, the range of allowable values is: \[ \text{From } 237.5 \text{ grams to } 262.5 \text{ grams} \]