Answer to Question #85310 in Statistics and Probability for Caroline

Question

In Uthiru Girls an average 300 candidates do K.C.S.E every year. One out of the four streams claims that its candidates perform better in K.C.S.E than the rest of the candidates. If the proportion of the candidates who passed with at least ‘C’ out of the possible ‘A’ is 0.73 and the proportion of candidates from the stream consisting of 40 candidates is 0.78 (who passed with at least a ‘C’ grade). Is the stream’s claim true?