Expected counts in chi-squared tests with two-way tables

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Rashad is a hotel manager. He surveyed a random sample of

120

guests and asked them which floor their room was and about their level of satisfaction. Here are the results:

Hotel floor	Satisfied	Neutral	Not satisfied	Total
$1$ ‍- $3$ ‍	$20$ ‍	$11$ ‍	$8$ ‍	$39$ ‍
$4$ ‍- $6$ ‍	$24$ ‍	$13$ ‍	$6$ ‍	$43$ ‍
$7$ ‍- $9$ ‍	$23$ ‍	$10$ ‍	$5$ ‍	$38$ ‍
Total	$67$ ‍	$34$ ‍	$19$ ‍	$120$ ‍

Rashad wants to perform a

χ^{2}

test of independence between floor and satisfaction.

What is the expected count for the cell corresponding to satisfied guests that stayed in floors $7$ ‍ to $9$ ‍?
You may round your answer to the nearest hundredth.

Expected:

AP®︎/College Statistics

Course: AP®︎/College Statistics > Unit 12

Problem