I am having a difficult time with this practice question. Any help would be greatly appreciated!

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 0.10 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 14 19 8 16 18 12 7 17 12 6 Copy Data Step 2 of 4: Calculate the expected value for the number of tardies in November. Enter your answer as a fraction or a decimal rounded to three decimal places.Step 4 of 4: Draw a conclusion and interpret the decision. Answer Tables Keypad Keyboard Shortcuts We fail to reject the null hypothesis and conclude that there is sufficient evidence at a 0.10 level of significance that the number of tardy students varies by month. O We reject the null hypothesis and conclude that there is insufficient evidence at a 0.10 level of significance that the number of tardy students varies by month. O We fail to reject the null hypothesis and conclude that there is insufficient evidence at a 0.10 level of significance that the number of tardy students varies by month. O We reject the null hypothesis and conclude that there is sufficient evidence at a 0.10 level of significance that the number of tardy students varies by month