Among 21802180 passenger cars in a particular region, 246246 had only rear license plates. among 302302 commercial trucks, had only rear license plates. a reasonable hypothesis is that commercial trucks owners violate laws requiring front license plates at a higher rate than owners of passenger cars. use a 0.100.10 significance level to test that hypothesis.

There is statistical evidence at 1% significance level to support that  commercial trucks owners violate laws requiring front license plates at a higher rate than owners of passenger cars.

Step-by-step explanation:

Given that among 2180 passenger cars in a particular region, 246 had only rear license plates. Among 302 commercial trucks, 44 had only rear license plates.

                          Cars      Trucks   Total

Total                    2180      302       2482

X                             246       44         290

p                          0.1128     0.1457   0.1168

(left tailed test at 1% significance level)

Std error of p =

Test statistic Z = p differnce/std error =

p value <0.0001

Since p is less than 1% we reject null hypothesis

There is statistical evidence at 1% significance level to support that  commercial trucks owners violate laws requiring front license plates at a higher rate than owners of passenger cars.

a=24; b=12

step-by-step explanation:

a/b=2: 1

a=2b

36/(1+2)=12

b=12

a=24

0.0076, if you meant 4.125 divided by 0.03125 it would be 132

step-by-step explanation:

first you have to move the decimal in 0.03125 over until its behind the 5 which is 5 places over. now the number is 3125

then you have to move the decimal in 4.125, 5 places over. now the number is 4,112,500.

now you divide like you would normally would and get 0.0076