A school principal claims that the number of students who are tardy to school does not vary from month to month. A survey over the school year produced the following results. Using a 0.05 level of significance, test a teacher's claim that the number of tardy students does vary by the month. Tardy Students Aug. Sept. Oct. Nov. Dec. Jan. Feb. Mar. Apr. May Number 16 9 6 10 17 17 14 19 19 6 Copy Data Step 1 of 4: State the null and alternative hypotheses in terms of the expected proportion for each month. Enter your answer as a fraction or a decimal rounded to six decimal places, if necessary. Ho: Pi = Ha: There is a difference in tardiness from month to month