point(s) possible To test Ho: = 1.3 versus H, : o # 1.3, a random sample of size n = 21 is obtained from a population that is known to be normally distributed. (a) If the sample standard deviation is determined to be s = 1.3, compute the test statistic. Xo = (Round to three decimal places as needed.) (b) If the researcher decides to test this hypothesis at the a = 0.05 level of significance, determine the critical values. The critical values are Xo.025 = and Xo.975 = (Round to three decimal places as needed.) (c) Draw a chi-squared distribution and depict the critical region. Choose the correct graph below. O A . O B. O c. O D. (d) Will the researcher reject the null hypothesis? Why? Choose the correct answer below. O A. No, because the test statistic is not in the critical region. O B. Yes, because the test statistic is not in the critical region