statistics

Question 11 Calculate the chi-square with the given observed and expected frequencies. Observed Expected frequencies No Cold Total Cold No cold Total cold Vitamin Vitamin C 50.00 55.00 105.00 57.27 47.73 105.00 U Placebo 70.00 45.00 115.00 Placebo 62.73 52.27 115.00 Total 120.00 100.00 220.00 Total 120.00 100.00 220.00