In a recent survey, a random sample of people was asked how to deal with a sluggish economy. They were also asked for their political affiliation. Their selected options and affiliations are summarized in the table below. Does political affiliation affect a person's choice for economic option at a .95 confidence level?

A manufacturing manager wanted to determine whether there was a relationship between the quality of shirts produced in her plant and the shift on which they were produced. Is there a relation at the .95 confidence level?

To determine if commercials viewed during "happy" programs were more effective than those viewed during "sad" programs, a group of people were shown commercials associated with a segment of the program "Real People" or with a particularly "sad" segment of "Sixty Minutes". They were asked if they were thinking mostly about the commercial, mostly about the program, or equally about both. . Is there a difference at the .95 confidence level?

A knowledgeable reader of the foreign currency futures quotations in the Wall Street journal can determine the direction of change in exchange rates for various currencies predicted by investors as a collective whole. Some predictions, compared with the actual subsequent changes are summarized below. Is there a relationship at the .10 level of confidence?