1.

Mandatory mask wearing has now been lifted in many Australian cities and as such there is debate as to whether the continuation to wear masks is independent of age group. A random sample was selected asking participants their age group and whether they will continue to wear masks. Analysis was done and copied here for you. Assume the conditions are satisfied and do NOT need to be checked.

a)Write the hypotheses to MAKE THIS test.

b) If =10%, give the critical value.

c) Using the above analysis, determine the value of the calculated test statistic.

d) Give your DECISION and CONCLUSION.