Answer:
The proportion is less than 0.75 only
Step-by-step explanation:
given that the ability of auto mechanics to identify simple engine problems, an automobile with a single suchproblem was taken to 72 different car repair facilities.
Sample proportion
Set up hypotheses as
H0: p =0.75
Ha: p < 0.75
(Left tailed test)
Assuming H0 to be true, std error of proportion = 
p difference = -0.1667
Test statistic Z = p diff/std error = -2.50
p value = 0.0062
since p is less than0.05 at 5% significance level we reject null hypothesis
The proportion is less than 0.75 only
Uw=2
w=2/U
ux=y
x=y/u
wx=(2/U)(y/u)
wx=(2y)/(Uu)
I think it’s the second one sorry if i’m wrong
The slope would be 3.
7-1=6
2-0= 2
6/2=3
$ 295 because you can multiple 15×19.7 is =295.5