Researchers Have Claimed That the Average Number of Headaches Per $n = 15$

question 95

Multiple Choice

Researchers have claimed that the average number of headaches per student during a semester Statistics is 14. Statistics students believe the average is higher. In a sample of $n = 15$ students th mean is 19 headaches with a deviation of 1.9. Which of the following represent the null and alternative hypotheses necessary to test the students' belief?

• A) \(H _ { 0 } : \mu < 14\) vs. \(H _ { \mathrm { a } } : \mu = 14\)
• B) \(H _ { 0 } : \mu = 14\) vs. \(H _ { \mathrm { a } } : \mu < 14\)
• C) \(H _ { 0 } : \mu = 14\) vs. \(H _ { \mathrm { a } } : \mu \neq 14\)
• D) \(H _ { 0 } : \mu = 14\) vs. \(H _ { \mathrm { a } } : \mu > 14\) of

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Definitions:

Excessive Scratching

Repeated scratching due to itchiness or irritation that can potentially lead to skin damage or infection.

Mechanical Ventilation

A medical procedure using machines to assist or replace spontaneous breathing.

Wound VAC System

The Wound VAC (Vacuum-Assisted Closure) System is a medical device that promotes wound healing by applying negative pressure to draw the edges of a wound together.