Resulis fiom a recent $NB$ test found that the CuR rate for the control croup was $6\mathrm{.}76$ and the CIB rate for the test group was $7\mathrm{.}5\%.$ The sample size for the control group was $1,000$ and the campleste for the test croup was $5,000.$ Test to see if the test group vielded a statistically Eiznlifeanthy hither cui than the control group.