_______ is a system in which employers advance wages and then require workers to remain on their jobs, in effect enslaving them

__________ make up the largest religious group in the United States

a. Evangelicals b. Jewish c. Unitarians d. Protestants

A museum director received an evaluation that estimated that a new advertising campaign increased museum visits between 2 and 8 percent (with 95 percent confidence). The director decided this was not enough visitors to be worth the effort, so the campaign was discontinued. According to the director, which of the following was lacking in the relationship between the campaign and the number of museum visits?

A. Statistical significance B. Practical significance C. Reliability D. Validity