Exhibit 18-6 It Is Believed That the Median Yearly Income in a in a Suburb

question 12

Multiple Choice

Exhibit 18-6
It is believed that the median yearly income in a suburb of Atlanta is $70,000. A sample of 67 residents was taken. Thirty-eight had yearly incomes above $70,000, 26 had yearly incomes below $70,000, and 3 had yearly incomes equal to $70,000. The null hypothesis to be tested is H₀: median = $70,000.
-Refer to Exhibit 18-6. To test the null hypothesis, the appropriate probability distribution to use is

• A)normal
• B)chi-square
• C)t distribution
• D)binomial

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Definitions:

Degrees Fahrenheit

A scale for measuring temperature where the freezing point of water is 32 degrees and the boiling point is 212 degrees under standard atmospheric conditions.

Sulfated

Describes a battery condition where lead sulfate crystals accumulate on the battery plates, often due to prolonged discharging, reducing the battery's capacity and performance.

Inactivity

Inactivity refers to a lack of movement or action, often associated with sedentary behavior that can lead to health complications over time, including muscle atrophy and cardiovascular issues.

Parallel

Lines or planes that are exactly side by side; a pair of beams that have exact spacing between them.