If the survival times in months for one group are {7.5, 12, 16, 33+, 55, 61}

and {31, 60, 65, 76+, 80+, 92} for the second group, apply the chi-square test to see if the survival curves are significantly different from one another. Recall that the notation of a plus as a superscript on the number indicates censoring at the denoted time, namely at 33 months for the case in group 1 and at 76 and 80 months for the cases in group 2. Test at the 0.01 significance level. Does the result seem obvious just from looking at the data?