91Ó°ÊÓ

17.1, 17.4, 16.6, 17.4, 17.7, 17.1, 17.3, 17.7..17.8, 19.2. 16.0. 15.9. 16.5. 16.8. 16.5, 17.1, 16.7

Let us now order the data values from smallest to largest.

15.9, 16, 16.5, 16.5, 16.6, 16.7, 16.8, 17.1, 17.1, 17.1, 17.3, 17.4, 17.4, 17.7, 17.7, 17.8, 19.2

Stemplot:

Make a vertical line.

Place the ones to the left of the vertical line and the tenths of each data value to the right of the vertical line

We notice a gap between 19.2 and the rest of the data values in the stemplot, implying that 19.2 is a possible outlier.

As a results 19.2 gram is a potential outlier

We notice that seven of the data values are less than seventeen ( more precisely 15.9, 16.0, 16.5, 16.6, 16.7, and 16.8)

$\frac{7}{17}≈0.4118$

The sample contains 0.4118 candy bars that weigh less than the advertised weight of 117 grams.