4. Sixteen randomly selected students (n = 16) from a political science class at Pierce College are given two forms of an attitude questionnaire, one before and the other after listening to a speaker discuss the pros and cons for the ban on homeless encampments (higher scores indicate more accepting attitudes for homeless encampments). The following represents the before and after attitude scores. Before Speaker:141415 20212222 2324 24 26 27 28 283020 After Speaker:131314 1517 171718192021 2324 252728 Does this sample provide enough evidence to conclude that the speaker made a difference on student attitudeabout the ban on homeless encampments? State the null and research (alternative) hypotheses in words and using symbols. Conduct the appropriate hypothesis test with a = .01 and state your conclusion in terms of this problem. Make sure to write APA style conclusions.

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