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 5.55.5 pounds/square inch (psi). Assume the population variance is 0.490.49. The engineer designed the valve such that it would produce a mean pressure of 5.45.4 psi. It is believed that the valve does not perform to the specifications. A level of significance of 0.050.05 will be used. Find the P-value of the test statistic. Round your answer to four decimal places.

i dont know sorry

step-by-step explanation:

853.3

step-by-step explanation:

the correct option is 2.

step-by-step explanation:

according to the given information triangle abc is a right angle triangle with right angle at a. segment ab is 5 and segment ac is 7. point d is on segment bc and angles adb and adc are right angles.

it is given that triangles abd, cad, and cba are similar.

two triangles are similar if their corresponding sides are proportional.

in triangle cba, using pythagoras theorem

                      )

triangle abd and cba are similar,

                            (2)

triangle cad and cba are similar,

                      )

using (1), (2) and (3), we get

hence proved.

therefore option 2 is correct.