The test statistic of z = -0.69 is obtained when testing the claim that p = 0.256. This is a two-tailed test. Using a 0.01 significance level, complete parts (a) and (b). Click here to view the standard normal distribution table for negative z scores. Click here to view the standard normal distribution table for positive z scores. a. Find the critical value(s). Select the correct choice below and fill in the answer box(es) within your choice. (Round to two decimal places as needed.) OA. There are two critical values; the lower critical value is and the upper critical value is OB. There is one critical value; the critical value is