TABLE 12-1 A Perfume Manufacturer Is Trying to Choose Between 2 Magazine

question 293

Multiple Choice

TABLE 12-1
A perfume manufacturer is trying to choose between 2 magazine advertising layouts. An expensive layout would include a small package of the perfume. A cheaper layout would include a "scratch-and-sniff" sample of the product. The manufacturer would use the more expensive layout only if there is evidence that it would lead to a higher approval rate. The manufacturer presents both layouts to 5 groups and determines the approval rating from each group on both layouts. The data are given below. Use this to test whether the median difference in approval rating is different from zero in favor of the more expensive layout with a level of significance of 0.05.
-Referring to Table 12-1, the hypotheses that should be used are

• A) H₀: MD = 0 versus H₁: MD ≠ 0.
• B) H₀: MD ≤ 0 versus H₁: MD > 0.
• C) H₀: M₁ = M₂ versus H₁: M₁ ≠ M₂.
• D) H₀: M₁ ≤ M₂ versus H₁: M₁ > M₂.

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Definitions:

Electrical Energy

The form of energy resulting from the flow of electric charge, transferred through conductive materials or space, and capable of being converted into other forms of energy like heat or light.

Motor

A device used to convert electric energy into mechanical energy.

Field Loss Relay

A protective device in electrical engineering that detects the loss of magnetic field in a generator and prevents generator damage by disconnecting it from the load or system.

Shunt Field

A winding in electrical machinery, placed in parallel with the armature, used to create a constant magnetic field.