Question
In: Statistics and Probability
An engineer designed a valve that will regulate water pressure on an automobile engine. The engineer...
An engineer designed a valve that will regulate water pressure on an automobile engine. The engineer designed the valve such that it would produce a mean pressure of 5.7 pounds/square inch. It is believed that the valve performs above the specifications. The valve was tested on 12 engines and the mean pressure was 5.9 pounds/square inch with a variance of 0.81 . A level of significance of 0.1 will be used. Assume the population distribution is approximately normal. Determine the decision rule for rejecting the null hypothesis. Round your answer to three decimal places.
reject Ho if T> ?
Solutions
Expert Solution
We have here,
Right tailed alternative hypothesis.
Sample size =n=12
Degree of freedom =n-1=12-1=11
t critical value =1.363
| reject Ho if T> 1.363 |
orchestra answered 1 year agoRelated Solutions
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