The Administrator of a College Is Concerned About the Students

question 74

Essay

The administrator of a college is concerned about the students using cell phones for texting during the class hours. She randomly selects 25 students to check if the variance of the number of students in the college using cell phones during the class hours is less than 12. She arrives at a sample variance of 7. She assumes the distribution to be normal.
A) State the appropriate null and alternative hypotheses for the test.
B) Compute the value of the test statistic.
C) Use the critical value approach to test the administrator's concern at α = 0.10.
D) Repeat the test at α = 0.01.

• A) State the appropriate null and alternative hypotheses for the test.
• B) Compute the value of the test statistic.
• C) Use the critical value approach to test the administrator's concern at α = 0.10.
• D) Repeat the test at α = 0.01.

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Definitions:

Musty Smell

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Physical Examination

A systematic assessment by a healthcare professional to evaluate the body and its functions using inspection, palpation, percussion, and auscultation.

Chief Complaint

The primary symptom or concern that brings a patient to seek medical attention.

Chest Pain

Discomfort or pain that may be felt anywhere along the front of the body between the upper abdomen and the neck, indicative of various conditions.