A Recent Study Claimed That at Least 15% of Junior $\alpha$

question 111

Essay

A recent study claimed that at least 15% of junior high students are overweight. In a sample of 160 students, 18
were found to be overweight. If α $\alpha$ = 0.05, test the claim using confidence intervals.

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Definitions:

Long-Term Customers

Clients or buyers who have been purchasing products or services from a business for an extended period, showing loyalty.

Complimentary Close

A polite phrase used to end a letter or email, such as "Best regards" or "Warmly," before the sender's signature.

Self-Styled Expert

An individual who claims to have expertise or knowledge in a particular area without formal recognition or credentials.

Successful Closing

In sales, successful closing refers to effectively concluding a deal or sales process, resulting in an agreement or purchase by the customer.