please help

A test is made oft-7T6: ii = 14 versus 17?]: p #14. A sample of Size n = 43 is drawn, and x = 12. The population standard deviation iso=6. (3) Compute the value of the test statistic z. (b) 15 H0 rejected at the 0.: 0.05 level? (c) Is HI] rejected at the u: 0.01 level? (a) Compute the value of the test statistic. Round the answer to at least two decimal places. \\m|elm'n|sle|m|? .......................................................