The Owner of Kat Motel Wants to Develop a Time

question 50

Multiple Choice

The owner of Kat Motel wants to develop a time standard for the task of cleaning a cat cage. In a preliminary study, she observed one of her workers perform this task six times, with the following results:

How many observations should be made if she wants to be 95.44 percent confident that the maximum error in the observed time is 2 seconds? Assume that the standard deviation of the task time is 6 seconds.

• A)5
• B)6
• C)30
• D)36
• E)49

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Definitions:

App Bar

A graphical control element typically found at the top of an app, containing buttons and icons for frequently used functions.

Outlook Bar

A feature in Microsoft Outlook that allows users to quickly navigate between different sections like mail, calendar, and tasks.

Lock Screen

The lock screen is a feature found in many operating systems that prevents unauthorized access to a device by requiring a user to perform a specific action to gain access.

Sign-in Screen

The interface that appears at the beginning of the use of an application or device that requires user authentication.