#### Answer

0.002
Very unlikely event

#### Work Step by Step

Here P = 0.21
$P(4 sales) = (0.21)^{4} = 0.002$
This event is very unlikely to occur as the probability is less than 0.005.

Published by
McGraw-Hill Education

ISBN 10:
0078136334

ISBN 13:
978-0-07813-633-7

0.002
Very unlikely event

You can help us out by revising, improving and updating this answer.

Update this answerAfter you claim an answer you’ll have **24 hours** to send in a draft. An editor
will review the submission and either publish your submission or provide feedback.