Dennis buys a lottery ticket every saturday, using the same set of numbers. although he has only won $25 on one occasion, he keeps buying the tickets. in fact, he's a little afraid that if he doesn't buy a ticket, that would be the one that would win really big. the fact that dennis seems addicted to buying lottery tickets is a common characteristic of which schedule of reinforcement?
a) fixed ratio
b) fixed interval
c) variable ratio
d) variable interval

Which of the following is not contained on the slide show toolbar? a. next button b. slide button c. close button d. pen tool

Rachel completed typing an official document with a word processing program. she wants to make sure that her document has no typographical errors. she also wants all headings to have the same font. which features in a word processing program should she use? rachel should use the feature in a word processing program to find typographical errors. she should apply to have uniform headings.

When early motion pictures played in movie theaters, they were often accompanied by live organ or piano music. which of the following are the most likely reasons that this happened? (select all that apply). the music was provided to distract audience members from the loud sounds made when filmstrips were changed. the music accompanied the movies because the movies were silent and audiences were used to hearing music during plays in theaters. the music usually was played before, and sometimes after the movie, as an alternative form of entertainment. the music viewers to interpret the dramatic action in the films.