**Name**: Toothpaste

**Abstract**: Specifications
for toothpaste call for the amount of active ingredient in each sample to be
7.20mg ±.08mg. Ten samples were drawn
each day, and the amount of active ingredient in each sample was determined. The data present the mean amount in samples
of n=10, and the standard deviation for 30 days.

**Variables (column)**:

- Day (1-30)
- Mean amount of active ingredient
- Standard deviation of active ingredient

**Possible Uses**:

**References**: Levine,
David, Patricia Ramsey, and Robert Smidt.
*Applied
Statistics for Engineers and Scientists*.