Use the following information to answer the next five exercises: A teacher predicts that the distribution of grades on the final exam will be and they are recorded in Table 11. 27. Table 11. 27 The actual distribution for a class of 20 is in Table 11. 28. CHAPTER 11 | THE CHI-SQUARE DISTRIBUTION 611  Grade Proportion A 0. 25 B 0. 30 C 0. 35 D 0. 10 Grade Frequency A 7 B 7 C 5 D 1 Table 11. 28 612 CHAPTER 11 | THE CHI-SQUARE DISTRIBUTION 9. Df = ______ 10. State the null and alternative hypotheses. 11. Χ2 test statistic = ______ 12. P-value = ______ 13. At the 5% significance level, what can you conclude?
