6. In a recent news article about an experimental vaccine for children, the following statement was presented: "In a trial involving 1,602 children, only 14 (1%) of the 1,070 who received the vaccine developed the flu, compared with 95 (18%) of the 532 who got a placebo." The data are shown in the table. Use a 0.05 significance level to find the test statistic and critical value needed to test for independence between the variable representing treatment and the variable representing flu.
Developed Flu?
Yes No
Vaccine treatment 14 1,056
Placebo 95 437
test statistic = 72.803, critical value = 9.488
test statistic = 9.488, critical value = 153.462
test statistic = 153.462, critical value = 3.841
test statistic = 3.841, critical value = 72.803