Based on the following hypothesis, I must develop a research proposal. I need some help with a few things. I copied and pasted areas of trouble below.

H₀1: There will be no significant differences in high school teacher efficacy among mathematics, science, and English teachers.

1. Next, describe your sample. The sample size, the type of sample, and the sampling procedures (e.g., convenience sampling, cluster sampling, etc.) must be explained. In other words, the sample selection procedures (who, what, when, where, how) need to be explained in enough detail for the study to be replicated. Include basic demographic information (number of participants, sample size, age, ethnicity, gender, etc.) described in narrative form. Since this is a proposal, plug in "place holders" (e.g., the sample consisted of 00 males and 00 females...). Quantitative literature citations must be provided for the adequate sample size (e.g. For this study, the number of participants required for an adequate sample size will be 66 students which according to Gall et al. (2007, p. 145) will the required minimum for a medium effect size with statistical power of .7 at the .05 alpha level).
2. Research Design: In the design section, the research design(s) is identified. The research design needs to be specific. For example, it is not sufficient to state that a quasi-experimental study will be conducted; instead, it is better to state that a pretest-posttest non-equivalent control group design will be conducted. Immediately after identifying the design, identify the independent and dependent variables and any covariates. In addition, give a rationale for why the design is most appropriate for the study. This rationale for the design needs to be supported by research literature (what is the purpose of the design? When is it used? Why is it the most appropriate choice for the present study?). Refer to educational research texts for the proper design description and use them to support your rationales. The chosen research design(s) must be consistent with the research question and hypothesis proposed as well as the procedures described. The recommended length is

Any tips or directions would be appreciated!