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 4.7 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 decision rule.
Reject Ho if z =
Solutions
Expert Solution
At alpha = 0.10 l.o.s ( right tailed )
Z critical value = 1.282
decision rule.
Reject Ho if z > 1.28
(5) Conclusion
It is concluded that the null hypothesis Ho is rejected. Therefore, there is enough evidence to claim that the valve performs above the specifications
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 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...
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 7.9 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 8.2
pounds/square inch with a standard deviation of 0.5. A level of
significance of 0.01 will be used. Assume the population
distribution is approximately normal. Determine the...
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- Woodbridge Manufacturing case in Appendix E, and use the three primary project evaluation methods (NPV, IRR...
- I need some good/new/not common research topics for my proposal assignment (Don't Need Political Topics, Technology...
- Write a C++ program that reads integers from standard input until end of file. Print out...
- Woo Audio is a small company in New York that makes high-quality headphone amplifiers. The company...
- How are users categorized? In Linux, which user has all the privileges? Why do we need...
- Force Table: If the center ring were to have considerable mass, what effect would it have...
- 1. Mark Welsch deposits $7,100 in an account that earns interest at an annual rate of...
ADVERTISEMENT