The Table Below Shows the Mean Number of Daily Errors

question 6

Multiple Choice

The table below shows the mean number of daily errors by seven 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 have decreased from Week 1 to Week 2. The right-tailed critical value at  = 0.05 is:

• A) 1.895
• B) 1.943
• C) 2.447
• D) 2.365

---

Definitions:

Perceptual Defense

A psychological concept where an individual unconsciously ignores or distorts stimuli that are threatening or disturbing to maintain psychological comfort.

Pollyanna Principle

The tendency for people to remember pleasant items more accurately than unpleasant ones, influencing their outlook and decision-making.

Pleasant Events

Activities or occurrences that bring joy, satisfaction, or pleasure to individuals.

Communication Style

The characteristic way in which an individual or entity prefers to convey and receive information and ideas.