Power of the test the regulators

Reference no: EM131008506

Testing cars, again. As in Exercise 69, state regulators are checking up on repair shops to see if they are certifying vehicles that do not meet pollution standards.

a) In this context, what is meant by the power of the test the regulators are conducting?

b) Will the power be greater if they test 20 or 40 cars? Why?

c) Will the power be greater if they use a 5% or a 10% level of significance? Why?

d) Will the power be greater if the repair shop's inspectors are only a little out of compliance or a lot? Why?

Reference no: EM131008506

Questions Cloud

Which of the graph types introduced in this section is used : The accompanying graphical display appeared in USA Today (October 22, 2009). It summarizes survey responses to a question about whether visiting social networking sites is allowed at work. Which of the graph types introduced in this section is use..

Dc motor operates at its rated terminal voltage : 1.A shunt-connected DC motor operates at its rated terminal voltage. Its no-load speed is200 radians/second. At its rated torque of 500 Nm, its speed is 180 radian/second. Themotor is used to directly drive a load whose load torque TL depends on its ..

Find what percentage of the observations fall in intervals : A sample of 3000 observations has a bell-shaped distribution with a mean of 82 and a standard deviation of 16. Using the empirical rule, find what percentage of the observations fall in the intervals x-bar ± 1s, x-bar ± 2s, and x-bar ± 3s

What role would random assignment play in this determination : The types of grasslands to be used include undisturbed native grasses, managed native grasses, undisturbed nonnative grasses, and managed non- native grasses. You are allowed a plot of land 500 meters square to study. Explain how you would determi..

Power of the test the regulators : Testing cars, again. As in Exercise 69, state regulators are checking up on repair shops to see if they are certifying vehicles that do not meet pollution standards. a) In this context, what is meant by the power of the test the regulators are cond..

What can be said about the percentage of salaries : Professors at a local university earn an average salary of $80000 with a standard deviation of $6000. The salary distribution is approximately bell-shaped. What can be said about the percentage of salaries that are at least $74,000

Problem regarding the quality control : Production managers on an assembly line must monitor the output to be sure that the level of defective products remains small. They periodically inspect a random sample of the items produced. If they find a significant increase in the proportion o..

At what rate is angle between the line and water changing : Angle of Elevation A fish is reeled in at a rate of l foot per second from a point 10 feet above the water (see figure). At what rate is the angle between the line and the water changing when there is a total of 25 feet of line out?

What extraneous variables are identi?ed in given statement : What extraneous variables are identi?ed in the given statement, and what strategy did the researchers use to deal with them? Do you think it was important that the men participating in the experiment were not told whether they were receivin..

User Account

All Pages