Choose the One Alternative That Best Completes the Statement or Answers

question 55

Multiple Choice

Choose the one alternative that best completes the statement or answers the question.
-A government agency believes that the median hourly wages for retail store workers in the central U.S. is $\$ 6.90$ . In a random sample of 100 workers, 68 were paid less than $\$ 6.90,10$ were paid $\$ 6.90$ , and the rest more than $\$$ 6.90. Find the test statistic $z$ to test the government's hypothesis. Use $\alpha = 0.05$ .

• A) \(- 4.743\)
• B) -3.912
• C) \(- 3.187\)
• D) \(- 2.386\)

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Definitions:

Gallbladder

An organ that stores bile produced by the liver, releasing it into the small intestine to aid in the digestion of fats.

Internal Mammary Artery

A major artery running along the inside of the chest wall, often used as a graft in coronary artery bypass surgery.

Pericardium

The double-walled sac containing the heart and the roots of the major blood vessels, with fluid that reduces friction during heart beats.

Mediastinum

The central compartment of the thoracic cavity, surrounded by loose connective tissue, that contains the heart, trachea, esophagus, and other structures.