For safety reasons, calf dehorning has become a routine practice at dairy farms. A report by a continental government organization stated that 80% of that continent's dairy farms carry out calf dehorning. A later study, published in a reputable dairy science journal, found that in a sample of 640 dairy farms in the continent, 518 dehorn calves. Does the journal's study support or refute the gure reported by the government organization? Explain. Test the relevant hypotheses using a = 0.05. (3 Determine the null and alternative hypotheses. H0: p = .80 H : p .80 (Type integers or decimals. Do not round.) Determine the test statistic. The test statistic is .59 . (Round to two decimal places as needed.) Determine the p-value. The pvalue is ID. (Round to three decimal places as needed.)