(One-Sample t-Test) Refer to Example 10.3, in which the average weight of diamonds using a new process was compared to an average weight of .5 karat.

1. Enter the six recorded weights—.46, .61, .52, .48, .57, .54—in column C1 and name them

“Weights.” Use Stat ➤ Basic Statistics ➤ 1-Sample t to generate the Dialog boxes in Figure 10.23.

2. To test 0 H : m 5.5 versus a H : m..5, select “One or more samples, each in a column”
from the drop-down list at the top of the dialog box. Use the list on the left to select “Weights” for the next box, and check the box marked “Perform hypothesis test.” Then, place your cursor in the box marked “Hypothesized mean:” and enter .5 as the test value.
Finally, use Options and the drop-down menu marked “Alternative hypothesis:” to select “Mean  hypothesized mean.” You can change the default confidence coefficient of .95 (95.0) if you wish. Click OK twice to obtain the output in Figure 10.24.

One-Sample 1 for the Mean Weights One or more samples, each in a column Weights Help Perform hypothesis test Hypothesized mean: S One-Sample Options Select Confidence level: 95.0 Alterative hypothesis: Mean hypothesized mean Help Cancel