Dylan jones kept careful records of the fuel efficiency of his new car. after the first eleven times he filled up the tank, he found the mean was 25.7 miles per gallon (mpg) with a sample standard deviation of 0.9 mpg. compute the 95% confidence interval for his mpg

Step-by-step explanation:

As per  given , we have

n=11

df = 11-1=10

Since population standard deviation is unknown , so we use t-test.

Critical t-value :

Confidence interval for population mean :_

Hence, the  95% confidence interval for his mpg =

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c

y = i/2 xtnop + (3i/2 tnop+ 1)

step-by-step explanation:

the picture is the step by step explanation.