Answer
Not disjoint.
Work Step by Step
Two events are disjoint if they cannot happen at the same time. Here, it can be possible to use Tl calculator and STATDISK program at the same time, therefore these events are not disjoint.
Elementary Statistics (12th Edition)
by Triola, Mario F.
Published by
Pearson
ISBN 10:
0321836960
ISBN 13:
978-0-32183-696-0
Chapter 4 - Probability - 4-3 Addition Rule - Basic Skills and Concepts - Page 153: 8
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