A clinician working with a particular client wants to find out if that client’s perception of their body (body image) differs from the average body image score in the population, so he gives them a standard test of body image. To analyse whether the client’s body image is different from the level of others in the general population (where the mean and standard deviation of that test are known) the clinician should conduct a [ Select ] Between-subjects t-test Within-subjects t-test z-test for a group mean One-sample t-test Chi-square goodness of fit z-test for an individual score Chi-square test of independence Pearson’s r correlation .