Suppose the National Transportation Safety Board (NTSB) wants to examine the safety of compact cars, midsize cars, and full-size cars. It collects a sample of three of the treatments (car types). Test whether the mean pressure applied to the driver’s head during a crash test is equal for each type of car.
To answer the question, we can set it up as a hypothesis testing problem and use the data collected to answer it. Complete the following to show how this would be done.
Suppose the National Transportation Safety Board (NTSB) wants to examine the safety of compact cars, midsize...
Suppose the National Transportation Safety Board (NTSB) wants to examine the safety of compact cars, midsize cars, and full-size cars. It collects a sample of three of the treatments (car types). Test whether the mean pressure applied to the driver’s head during a crash test is equal for each type of car. To answer the question, we can set it up as a hypothesis testing problem and use the data collected to answer it. Complete the following to show how...
Suppose the National Transportation Safety Board (NTSB) wants to examine the safety of compact cars, midsize cars, and full-size cars. It collects a sample of cars each of the cars types. The data below displays the frontal crash test performance percentages. Test whether there are statistical differences in the frontal crash test performance for each type of car. FYI: High scores on crash performance tests are GOOD. (Higher scores means they passed the test a higher percent of the time.)...
The Ontario Ministry of Transportation is studying the relative safety of compact cars, mid-sized cars, and full size cars. Safety data is collected from a random sample of four cars for each of three car types. Using the data provided below, test whether the mean pressure applied to the driver’s head during a crash test is on average equal for each of the car types. Use a significance level of 1%. Compact Mid-Sized Full Sized 54 46 48 63 42...
A highway safety institution conducts experiments in which cars are crashed into a fixed barrier at 40 mph. In the institute's 40-mph offset test, 40% of the total width of each vehicle strikes a barrier on the driver's side. The barrier's deformable face is made of aluminum honeycomb, which makes the forces in the test similar to those involved in a frontal offset crash between two vehicles of the same weight, each going just less than 40 mph. You are...
P value State your conclusion. Would we perform post-hoc procedures for this data? A highway safety institution conducts experiments in which cars are crashed into a fixed barrier at 40 mph. In the institute's 40-mph offset test, 40% of the total width of each vehicle strikes a barrier on the driver's side. The barrier's deformable face is made of aluminum honeycomb, which makes the forces in the test similar to those involved in a frontal offset crash between two vehicles...
Suppose a car dealer tells you that specific cars get 35 miles per gallon on average. You would be able to use hypothesis tests to test whether or not this value might be correct. Why would you use a hypothesis test instead of a confidence interval in this situation? Answer the following questions in a Word document: A car dealer states that a new brand of car gets 35 miles per gallon on average. Suppose a consumer group claims that...
The Dean of Instruction at a local college requested that a new standardized test for an introductory statistics course be developed with the requirement that it should have µ = 120 points and σ = 15. A class of 30 students complete the new test with a mean grade of 115. Conduct a hypothesis test at α = .05 to determine whether the claim that µ = 120 can be supported. Use the p-value approach and complete the following to...
The Dean of Instruction at a local college requested that a new standardized test for an introductory statistics course be developed with the requirement that it should have µ = 120 points and σ = 15. A class of 30 students complete the new test with a mean grade of 115. Conduct a hypothesis test at α = .05 to determine whether the claim that µ = 120 can be supported. Use the p-value approach and complete the following to...
The us. Department Transportation National ghway aff c Safety Adr i istration, eported that 77% of all at ally i ured auto mo e verswe e nto cated Aranao driver Do these data indicate that the population proportion of driver fatait es related to alcohol is less than 77% in Kit Carson County? Use α-0.10. sample of 55 ecots o autom ble drive a a tesi ace an county showed that 37 in ed an int icated )What is the...
A manufacturer of hard safety hats for construction workers is concerned about the mean and the variation of the forces helmets transmit to wearers when subjected to a standard external force. The manufacturer desires the mean force transmitted by helmets to be 800 pounds (or less), well under the legal 1,000-pound limit, and σ to be less than 40. A random sample of n = 45 helmets was tested, and the sample mean and variance were found to be equal...