For the first testing of a new drug against hypercalcemia, a group of 12 patients was selected. The level of calcium in blood for each patient was measured before and after taking the treatment. The results of the study are presented in the table below (blood calcium level in mg/dL). 
Use a level 0.05 signed-rank sum test to determine whether the treatment decreases the calcium level in the patients with hypercalcemia. The test statistic value is ____________ The critical value: ______________ Make a conclusion about rejection or acceptance of the null hypothesis. ____________
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