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Problem

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Textbook Expert
Textbook ExpertVerified Tutor
23 Nov 2021

Given information

Instructions: For the following ten exercises,
Hypothesis testing: For the following ten exercises, answer each question.
 State the null and alternate hypotheses.
 State the p-value.
. State alpha.
. What is your decision?
 Write a conclusion.
 Answer any other questions asked in the problem.
Driver error can be listed as the cause of approximately  of all fatal auto accidents, according to the American Automobile Association. Thirty randomly selected fatal accidents are examined, and it is determined that   were caused by driver error.

Step-by-step explanation

Step 1.

We are given to use a left-tailed test. That’s why the alternative hypothesis has  sign. Reject the null hypothesis if   

and .

The following formula is used,

 

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