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 4.3 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 4.7 pounds/square inch with a standard deviation of 0.9. A level of significance of 0.05 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 H0 if t >
Solutions
orchestra answered 1 year agoRelated Solutions
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 8 engines and the mean pressure was 6.2
pounds/square inch with a variance of 0.49. A level of significance
of 0.05 will be used. Assume the population distribution is
approximately normal. Make the decision...
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 5.3 pounds/square inch. It is
believed that the valve performs above the specifications. The
valve was tested on 300 engines and the mean pressure was 5.4
pounds/square inch. Assume the variance is known to be 1.00. A
level of significance of 0.1 will be used. Make a decision to
reject or fail...
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 6.9 pounds/square inch. It is
believed that the valve performs above the specifications. The
valve was tested on 13 engines and the mean pressure was 7.1
pounds/square inch with a variance of 0.49. A level of significance
of 0.1 will be used. Assume the population distribution is
approximately normal. Is there sufficient...
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 4.7 pounds/square inch. It is
believed that the valve performs above the specifications. The
valve was tested on 24 engines and the mean pressure was 5.0
pounds/square inch with a standard deviation of 0.7. A level of
significance of 0.01 will be used. Assume the population
distribution is approximately normal. Make the...
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 5.9 pounds/square inch. It is
believed that the valve performs above the specifications. The
valve was tested on 26 engines and the mean pressure was 6.2
pounds/square inch with a standard deviation of 0.9. A level of
significance of 0.025 will be used. Assume the population
distribution is approximately normal. Make the...
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 5.1 pounds/square inch. It is
believed that the valve performs above the specifications. The
valve was tested on 210 engines and the mean pressure was 5.2
pounds/square inch. Assume the standard deviation is known to be
0.6. A level of significance of 0.1 will be used. Determine the
decision rule.
Enter the...
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 4.2 pounds/square inch. It is
believed that the valve performs above the specifications. The
valve was tested on 170 engines and the mean pressure was 4.44
pounds/square inch. Assume the standard deviation is known to be
1.0 A level of significance of 0.02 will be used. Determine the
decision.
- How do...
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 7.6 pounds/square inch. It is
believed that the valve performs above the specifications. The
valve was tested on 140 engines and the mean pressure was 7.8
pounds/square inch. Assume the standard deviation is known to be
1.0. A level of significance of 0.05 will be used. Find the value
of the test...
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 4.7 pounds/square inch. It is
believed that the valve performs above the specifications. The
valve was tested on 160 engines and the mean pressure was 4.8
pounds/square inch. Assume the standard deviation is known to be
0.8. A level of significance of 0.1 will be used. Determine the
decision rule. Enter the...
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 6.8 pounds/square inch. It is
believed that the valve performs above the specifications. The
valve was tested on 16 engines and the mean pressure was 6.9
pounds/square inch with a variance of 1.0. A level of significance
of 0.1 will be used. Assume the population distribution is
approximately normal. Make the decision...
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