Dr. Bob is a high school principal who implemented a new program he designed to increase SAT scores. He knows the population mean for SAT scores is 1205.00 and the standard deviation = 65.65. Principal Bob predicted that his students would score significantly above the national average. Principal Bob's 10 students scored a mean of 1120.42. U= Of = X=i n = Step 1. State your hypotheses. a. Is it a one-tailed or two-tailed test? Answer: b. Research hypotheses HA: Ho:c. Statistical hypotheses HA: H0: Step 2. Set the signicance level (or = .05). Find the critical values of 2. On the normal distribution, place lines where the critical value(s) should be. Label the critical value(s). Lightly shade in the rejection region(s). The critical value for this experimental study is: zed. = Step 3. Compute the appropriate statistical test using the data provided in the two tables below. Calculate the population standard error (write the formula first):Step 4. Make a decision. Determine whether the value of the test statistic is in the critical region: Add a line representing 201,, to the graph above and label it appropriately. Is zobt in the critical region? Should you reject or retain the H0? Are your results signicant or nonsignicant? Step 5. Report the statistical results. For now, it is enough to say whether or not your results are statistically signicant, and whether you retain or reject the null hypothesis, but very soon you will be writing complete statistical results in the following format: 2 = the obtained value of z, p either the value of alpha. For this study, that looks like this: 7=-403 D> O5 Step 5. Report the statistical results. For now, it is enough to say whether or not your results are statistically signicant, and whether you retain or reject the null hypothesis, but very soon you will be writing complete statistical results in the following format: 2 = the obtained value of z, p either the value of alpha. For this study, that looks like this: 2 = -4.07,p > .05 Step 6. Write a complete APA-style conclusion. Include the sample mean, population mean, and statistical results in the format you learned in the previous worksheets