The Table Below Shows the Mean Number of Daily Errors

question 8

Multiple Choice

The table below shows the mean number of daily errors by air traffic controller trainees during the first two weeks on the job.We want to perform a paired t-test at  = .05 to see if the mean daily errors decreased significantly. The test statistic is:

• A) 1.25
• B) 1.75
• C) 0.87
• D) 0.79

---

Definitions:

Internal Reference

A benchmark or standard within an experiment or measurement against which other data or results are compared or calibrated.

Deshielded Proton

A proton in an NMR spectrum that appears at lower field due to its electron cloud being less shielded from external magnetic fields, often indicating an electron-withdrawing group nearby.

Farthest Downfield

In NMR spectroscopy, refers to the signal appearing at the lowest field strength, typically associated with environments experiencing the greatest deshielding.

Signal Intensity

In the context of spectroscopy or imaging, it refers to the magnitude of a detected signal, indicating the presence or concentration of a substance.