The manufacturer of a certain engine treatment claims that if you add their product to your​ engine, it will be protected from excessive wear. An infomercial claims that a woman drove3hours without​ oil, thanks to the engine treatment. A magazine tested engines in which they added the treatment to the motor​ oil, ran the​ engines, drained the​ oil, and then determined the time until the engines seized. Complete parts ​(a) and ​(b) below.​(a) Determine the null and alternative hypotheses that the magazine will test. UpperH0​:▼ muμsigmaσpp▼ not equals≠less than<greater than>equals=3Upper H1​:▼ muμsigmaσpp▼ not equals≠equals=less than<greater than>3​(b) Both engines took exactly 17 minutes to seize. What conclusion might the magazine make based on this​ evidence?  A.The​ infomercial's claim is true.The Informericial not true

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Asked Dec 2, 2019
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The manufacturer of a certain engine treatment claims that if you add their product to your​ engine, it will be protected from excessive wear. An infomercial claims that a woman drove
3
hours without​ oil, thanks to the engine treatment. A magazine tested engines in which they added the treatment to the motor​ oil, ran the​ engines, drained the​ oil, and then determined the time until the engines seized. Complete parts ​(a) and ​(b) below.
(a) Determine the null and alternative hypotheses that the magazine will test.
 
UpperH0​:
 
muμ
sigmaσ
pp
 
not equals≠
less than<
greater than>
equals=
3
Upper H1​:
 
muμ
sigmaσ
pp
 
not equals≠
equals=
less than<
greater than>
3
(b) Both engines took exactly 17 minutes to seize. What conclusion might the magazine make based on this​ evidence?
 
 
A.
The​ infomercial's claim is true.
The Informericial not true
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Expert Answer

Step 1

(a)

 

From the given information, the claim of the problem is the average hours without oil is equal to 3.

 

Null Hypothesis:

 

H0: µ=3.

 

Alternative Hypothesis:

 

H1: µ≠3.

 

Thus, the c...

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Hypothesis Testing

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