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Find the value of z that would be used to test the difference between the proportions,...

Find the value of z that would be used to test the difference between the proportions, given the following. (Use G - H. Give your answer correct to two decimal places.)

Sample n x
G 385 317
H 417 328



You may need to use the appropriate table in Appendix B to answer this question.

math   Statistics-And-Probability   
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