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?

Question

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The director believed the increase in visits (between 2 and 8 percent) was not substantial enough to justify the effort, indicating a lack of practical significance, not a lack of statistical significance, reliability, or validity.

A Museum Director Received an Evaluation That Estimated That a New