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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