How do I set this up and solve it?

12. Below is a 2 x 2 contingency table showing observed frequency data from two categorical variables, Gender and Level of Concern about walking at night on campus. Campus administrators suspect that there is an association between gender and concern about walking at night on campus. Fill in the parentheses of the table with the expected frequency count for each cell (taken to 2 decimal places). Then use that information to complete the Chi-Square Table for Exercise 14 below; then perform the hypothesis test. Gender Level of Concern Male Female Totals about walking at night on campus Low 50 15 C High 20 50 Totals Chi-Square Table for Exercise 14 Variables Observed Expected fobs - fexp (fobs - fexp ) 2 (fobs- fexp)2/ fexp Listed Frequencies Frequencies (fobs) (fexp) Male/Low 50 Male/High 20 Female/Low 15 Female/High 50 Totals 135 135 Step 1) Null Hypothesis- -Ho: Alternative Hypothesis-------H1: Step 2) State the test statistic you will use for this hypothesis test. Step 3) Your level of significance (alpha) is .05. Determine the critical value of the test statistic based on the alpha specified above and your calculation of the appropriate degrees of freedom (d.f.). Make sure to dra and label a bell shaped curve in the space below. 3 Step 4) Calculate the obtained value of the test statistic (see the Chi-Square Table) Step 5) Make a decision about your null hypothesis and interpret this decision