Please help me answer these ASAP! They all go together in relation to the first question about the Physical Therapy clinic

What is the scale of the dependent variable Select one: a. continuous, ordinal Ob. discrete, ordinal O C. discrete, ratio O d. continuous, ratioWhich of the following plots are appropriate for comparing the two treatment samples? Select one or more: a. normal curves created from M and s of each treatment group b. histograms scatterplot bar graph with M i s If the clinic also wants to determine if the final client outcome (neck bending) for each treatment is better than a clinical norm established with a large population, which column of the Table B.1, The Unit Normal Table, would be used for determining the critical z statistic for the hypothesis test? Select one: a. The body of the distribution b. The tail(s) of the distribution O c. None of the other answers is correct d. The area between the mean and the critical value. . . . 7 Which of the following information would the clinic need for the test mentioned In the preVIous question. Select one or more: 7 a. s for both clinical treatment samples b. N for the population c. o for the clinical norm d. M for both clinical treatment samples e. n for both clinical treatment samples 1'. p for the clinal norm . . . . . 7 Which of the following are essential to consider for evaluating the valldlty of the deCISIon of the z-test mentioned above. Select one or more: a. all subjects were clients of one clinic rather than being randomly sampled from a population with neck pain b. the sample size wasN=30 c. the standard deviations of the two treatment groups differed. d. the sample size was n=15 e. the data in the cold pack treatment group is strongly skewed. A physical therapy clinic wants to know if warm compresses hasten the healing of muscle strains better than cold packs. They decide to test the question by randomly assigning 30 clients with neck muscle pain to treatment with either heat or cold for 10 weeks. At the end of treatment each client is evaluated in terms of how far they can flex their neck from an upright posture without pain, In degrees. What kind of experiment is it? Select one: a. pre-experimental with natural grouping k- b' nonexperimental C" correlational study d. true experiment