A 90% Confidence Interval for the Average Salary of All

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.