YouTube Would Like to Test the Hypothesis That the Standard

question 14

Multiple Choice

YouTube would like to test the hypothesis that the standard deviation for the length of an online video watched by a user is more than 2 minutes. A random sample of 21 people who watched online videos was selected. The sample standard deviation for the length of the video was found to be 2.5 minutes. The degrees of freedom for this hypothesis test would be _______.

• A)21
• B)20
• C)18
• D)19

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Definitions:

Specialised Expertise

Refers to knowledge or skills in a specific niche or area that sets individuals or companies apart from others in their field.

Human Resource Specialists

Professionals responsible for managing an organization's human capital, including recruitment, training, and employee relations.

Line Managers

Directly contribute to the production of the organisation’s basic goods or services.

Quality Workforce

A workforce that possesses the skills, competencies, and attitudes necessary to perform their roles effectively and contribute to the organization's success.