At a Course in Public Speaking, the Instructor Always Gives

question 29

Multiple Choice

At a course in public speaking, the instructor always gives an opening speech that lasts between fifteen and eighteen minutes. The length of the speech can be modeled by a uniform distribution, that is, the speech is just as likely to last fifteen minutes as it is to last eighteen minutes. The probability density curve is shown below. What is the probability that the speech will last sixteen minutes or more? What is the probability that the speech will last between eighteen and nineteen minutes?

• A)Can't be determined with the given information
• B)0.50; 0.25
• C)0.50; 0.75
• D)0.75; 0.25

---

Definitions:

Fundamental Attribution Error

The tendency to attribute others' behavior to their character or disposition rather than to external factors.

Just-World Hypothesis

The belief that people get what they deserve and deserve what they get, which often underlies the assumption that the world is fair and justice is served.

Validity Effect

The tendency to believe that information is correct or valid simply because it has been repeated multiple times.

The Big Lie

A propaganda technique, often attributed to Adolf Hitler, based on the premise that a lie, if audacious enough and repeated enough times, will be believed by the masses.