Step 1: Enter the data in Statcrunch.
Step 2: Click the menu sequence Stat -›T Stats
One Sample - With Data.
o Populations Standard Deviation Unknown
• Step 3: In the One Sample window that displays:
O
In the Select columns box, select ages.
o In the Perform section, select Confidence
Interval.
In the Level box, type 0.98.
O
Click Compute to display the confidence
interval.
Step 4: Show all work clearly by stating the
confidence interval and interpret the meaning
of the 98% confidence interval you just
computed.