Juicy Fruits limited are extracting Mango juice from mangoes and classifying into 1st ,2nd,3rd and 4th grades in the ratio 1:2:3:4. Juicy Fruits limited have adopted a modern juice extraction technology and as a result 600 juice packets were examined and graded as follows; Grade 1st 2nd 3rd 4th No.of juice packets 54 118 175 253 By testing the hypothesis at 0.01 check whether the new technology adopted by juicy fruits ltd has improved the grading of fruits

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.