subject
Mathematics, 04.04.2020 07:26 glowbaby123

An engineer has designed a valve that will regulate water pressure on an automobile engine. The valve was tested on 250250 engines and the mean pressure was 6.86.8 pounds/square inch (psi). Assume the population standard deviation is 0.60.6. If the valve was designed to produce a mean pressure of 6.76.7 psi, is there sufficient evidence at the 0.10.1 level that the valve performs above the specifications?

ansver
Answers: 3

Another question on Mathematics

question
Mathematics, 21.06.2019 16:20
An equation representing lyle’s hedge-trimming business is a = 12n - 300 where a is the amount of profit or loss in dollars and n is the number of hedges trimmed. how would the graph of lyle’s business change if the equation a = 10n - 300 represented his business? the graph would be flatter. the graph would be steeper. the graph would start closer to the origin. the graph would start lower on the y-axis.
Answers: 2
question
Mathematics, 21.06.2019 18:30
The base of a triangle exceeds the height by 9 inches. if the area is 180 square inches, find the length of the base and the height of the triangle.
Answers: 1
question
Mathematics, 21.06.2019 20:00
Mario has $14.35 left in his wallet. he spent $148.43 for tablecloths. then, he spent $92.05 for napkins. how much money did mario have in his wallet to start with?
Answers: 2
question
Mathematics, 21.06.2019 22:30
My hour hand points between the 8 and the 9 in 35 minutes it will be the next hour. what time is it ?
Answers: 2
You know the right answer?
An engineer has designed a valve that will regulate water pressure on an automobile engine. The valv...
Questions
question
Mathematics, 09.07.2019 07:30
question
Mathematics, 09.07.2019 07:30