A 90% Confidence Interval for the Average Salary of All

question 69

Multiple Choice

A 90% confidence interval for the average salary of all CEOs in the electronics industry was constructed using the results of a random survey of 45 CEOs. The interval was
($146,132, $156,381) . Give a practical interpretation of the interval.

• A)We are 90% confident that the mean salary of the sampled CEOs falls in the interval $146,132 to $156,381.
• B)90% of all CEOs in the electronics industry have salaries that fall between $146,132 to $156,381.
• C)We are 90% confident that the mean salary of all CEOs in the electronics industry falls in the interval $146,132 to $156,381.
• D)90% of the sampled CEOs have salaries that fell in the interval $146,132 to $156,381.

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Definitions:

Women's Suffrage

The movement aimed at securing women the right to vote and run for political office, culminating in the United States with the ratification of the 19th Amendment in 1920.

Large Corporations

Business entities that operate on a large scale, often internationally, with significant economic power and influence over markets, employment, and policy.

Theodore Roosevelt

The 26th President of the United States (1901–1909) known for his progressive policies, conservation efforts, and leadership of the Rough Riders during the Spanish-American War.

Democracy

A form of government in which power is vested in the hands of the people and exercised by them directly or through freely elected representatives.