Question: set 2: To determine whether there is an attendance rate drop of a national conference this year (consider as 1) than last year (consider as

set 2: To determine whether there is an attendance rate drop of a national conference this year (consider as 1) than last year (consider as 2), a sample of 400 people this year and a sample of 400 people last year were selected. Given =0.01. The data are summarized below: This Year Last Year Difference Attending 359 378 -19 Not Attending 41 22 19 Total Number 400 400 400 (b) What is the test statistic

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