Which of the following scenarios would represent a dependent means t-test (repeated measures, within-group design)? The research is investigating if trust in government decreased during the pandemic.
a. Trust in government was measured in a single sample of people before and after the pandemic started.
b. A sample of 30 people completed a questionnaire indicating their trust in the government. The sample mean score was compared to the trust in government scores in the general population before the pandemic with a known standard deviation.
c. A sample of 30 people completed a questionnaire indicating their trust in the government during the pandemic. The sample score was compared to the trust in government scores with another sample of 30 people who completed the questionnaire before the pandemic.
d. One person completed a questionnaire indicating their trust in the government during the pandemic. That score was compared to the trust in government scores with the scores of the general population before the pandemic.