Question 8.334

8. Crash Test Data. The National Highway Traffic Safety Administration collects data on crash tests for new motor vehicles. They reported that the mean femur load (force applied to the femur) in a frontal crash for the passenger in a Chevrolet Equinox SUV was 1003 pounds. Assume the data are normally distributed, the population standard deviation was 300 pounds, and the sample size was 9.

  1. Compute and interpret the margin of error for a confidence interval with 90% confidence.
  2. Construct and interpret a 90% confidence interval for the population mean femur load in a frontal crash for the passenger in a Chevrolet Equinox SUV.