An engineer has designed a valve that will regulate water pressure on an automobile engine. The valve was tested on 170 engines and the mean
pressure was 4.7 pounds/square inch (psi). Assume the population variance is 1.00. The engineer designed the valve such that it would produce a
mean pressure of 4.5 psl. It is believed that the valve does not perform to the specifications. A level of significance of 0.05 will be used. Make the
decision to reject or fail to reject the null hypothesis.

the required function is .

step-by-step explanation:

from the given table it is noticed that the graph passing through (-3,7), (0,4), (3,1) and (8,-4).

it is a linear function because the value of y is decrease by one as the value of x increase by 1.

the slope of the function is

the slope of the function is -1 and the y-intercept is 4.

the slope intercept form is

where, m is slope and b is y-intercept.

therefore the required function is . the graph of this function is shown below.

step-by-step explanation:

twenty-six miles over two gallons because the proportion for the original 13 miles to one gallon would be written 13/1 and, doing the same thing to the top and bottom, i multiplied by 2 and got 26/2