When doing the tunnels for a subway train, two different types of roadheaders are used. The following data are collected concerning the time used for each type to cover the same distance.
Determine a 90% confidence interval for the mean difference of times between the two types of roadheaders. Round your answer to three decimal places.

Question

When doing the tunnels for a subway train, two different types of roadheaders are used. The following data are collected concerning the time used for each type to cover the same distance.
  Determine a 90% confidence interval for the mean difference of times between the two types of roadheaders. Round your answer to three decimal places.

Quizplus · Accepted Answer

The Answer of When doing the tunnels for a subway train, two different types of roadheaders are used. The following data are collected concerning the time used for each type to cover the same distance.
  Determine a 90% confidence interval for the mean difference of times between the two types of roadheaders. Round your answer to three decimal places.

When Doing the Tunnels for a Subway Train, Two Different