A Statistician Consulting for a State Department of Transportation Conducts $H _ { 0 }$

question 15

Multiple Choice

A statistician consulting for a state department of transportation conducts a study to see if the proportion of drivers who are intoxicated has decreased since last year.
$H _ { 0 }$ : The proportion is the same as last year
$H _ { A }$ : The proportion is less than last year.
The $P$ -value of a significance test is greater than the significance level. She can conclude:

• A) the alternative hypothesis is true.
• B) the null hypothesis is true.
• C) there is not enough evidence to reject the null hypothesis.
• D) the test was too powerful.
• E) there is enough evidence to reject the null hypothesis.

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Definitions:

Voting Rights Act

Law passed in the wake of Martin Luther King Jr.’s Selma-to-Montgomery March in 1965; it authorized federal protection of the right to vote and permitted federal enforcement of minority voting rights in individual counties, mostly in the South.

Federal Officials

Individuals who hold positions of authority within the government of a federation, responsible for the execution and enforcement of federal laws and policies.

Voter Registration

The process by which individuals enroll or sign up to become eligible to vote in elections.

President Nixon

Richard Nixon, the 37th President of the United States (1969-1974), known for his role in the Vietnam War and the Watergate scandal, leading to his resignation.