![subject](/tpl/images/cats/mat.png)
Mathematics, 14.12.2021 21:20 Jana1517
An engineer has designed a value that will regulate water pressure on an automobile engine. The valve was tested on 160 engines and the mean pressure was 4 lbs/square inch. Assume the standard deviation is known to be 0.9 if the value was designed to produce a mean pressure of 4.2 lbs is there a sufficient evidence at the 0.2 level that the valve performs below specifications? State the bulk and alternative hypotheses for the above scenario
![ansver](/tpl/images/cats/User.png)
Answers: 1
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Mathematics
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 19:30
Write the expression 7x^3-28xy^2 as the product of 3 factors
Answers: 2
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 20:30
Solve each quadratic equation by factoring and using the zero product property. x^2 + 18x = 9x
Answers: 2
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 23:30
Walking at a constant rate of 8 kilometers per hour, juan can cross a bridge in 6 minutes. what is the length of the bridge in meters?
Answers: 1
You know the right answer?
An engineer has designed a value that will regulate water pressure on an automobile engine. The valv...
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 15.10.2021 22:10
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 15.10.2021 22:10
![question](/tpl/images/cats/istoriya.png)
History, 15.10.2021 22:20
![question](/tpl/images/cats/mat.png)
Mathematics, 15.10.2021 22:20
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/pravo.png)
![question](/tpl/images/cats/fizika.png)
Physics, 15.10.2021 22:30
![question](/tpl/images/cats/mat.png)
Mathematics, 15.10.2021 22:30
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 15.10.2021 22:30
![question](/tpl/images/cats/fizika.png)
Physics, 15.10.2021 22:30
![question](/tpl/images/cats/mat.png)
Mathematics, 15.10.2021 22:30
![question](/tpl/images/cats/istoriya.png)
History, 15.10.2021 22:30
![question](/tpl/images/cats/mat.png)
Mathematics, 15.10.2021 22:30
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 15.10.2021 22:40