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.

the answer is b: 18

step-by-step explanation:

use the pythagorean theorem to .

a^2+b^2=c^2

plug 18 for "r"

the 2 legs are 18 and 24

18^2+24^2=c^2

324+576=c^2

900=c^2

c=30

30-12=18

18 is the radius

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