Local county officials have heard reports that a service station is allowing cars 20 years and older with known violations to pass their annual safety inspection. From administrative data, they know 30% of all cars 20 years and older do not pass their annual safety inspection. To test their theory about the service station, they request records from the most recent 150 inspections of cars of this type, finding 30 of the 150 had been rejected. Let p be the true rate of cars 20 years and older that do not pass their annual safety inspection from this service station. What are the implied null and alternative hypotheses local county officials are testing? Assuming the true value of p is 0.3, which expression is the correct way to compute a test statistic for the proportion observed in the sample?

5

step-by-step explanation:

answer: the answer is 110

answer: the proof is mentioned below.

step-by-step explanation:

since, given:   lines bc = ef

prove:   lines ac > ef

          statements                                           reason

1. bc=ef                                           1. given

2. ac= ab+bc                                 2. because b is the point between the  

                                                            line segment ac

3.   ac > bc                                       3. because if a line segment is equal to

                                                          the sum of two line segments then it is

                                                          always greater then each of these

                                                          individual line segments

4. ac > ef                                         4. by equality property.