Xtest = > (obs-exp)2 Row Total X Column Total exp Expected Frequency = Grand Total Degrees of freedom (df) = (# rows - 1) x (# columns - 1) CHISQ.DIST.RT (x2 , df) To help design a marketing campaign, a music streaming company wants to know if a customer's age is a factor in deciding to purchase a music streaming service. 500 people were randomly selected and asked if they subscribe to a music streaming service. Is there enough evidence to conclude that age is a factor in whether you subscribe to a music streaming service? + Test at the 1% level of significance. The results of the study are below: Age Subscribe? Under 18 18 to 34 35 and over Total Yes 52 128 130 310 No 18 52 120 190 Total | 70 180 250 500 Ho HA (2) Write the expected frequencies in the table (3 marks) You have calculated the Xtest = 21.438 Test Statistic (3 marks) p-value (2 marks) Decision/Why (1) Conclusion: Circle the Correct One (1 mark) A. Yes, can conclude that age is a factor in whether you subscribe to a music streaming service B. No, can't conclude that age is a factor in whether you subscribe to a music streaming service