To construct a confidence interval using the given confidence level, do whichever of the following is appropriate. (a) Find the critical value za /2. (b) find the critical value tg /2, or (c) state...

Extracted text: To construct a confidence interval using the given confidence level, do whichever of the following is appropriate. (a) Find the critical value za /2. (b) find the critical value tg /2, or (c) state that neither the normal nor the t distribution applies. 90%; n= 100; o = 17.0; population appears to be skewed 1 t-table Click here to view a table of critical t-values. Click here to view page 1 of the standard normal table. Click here to view page 2 of the standard normal table. t distribution: Critical t values O A. Za/2 = 2.575 Area in One Tail 0.005 0.05 0.10 0.01 0.025 O B. ta/2 = 2.626 Degrees of Freedom Area in Two Tails 0.05 0.01 0.10 0.20 O C. ta/2 = 1.660 0.02 31.821 6.965 4.541 3.747 3.365 3.143 2.998 2.896 2.821 6.314 2.920 2.353 2.132 2.015 1.943 1.895 1,860 1.833 3.078 1.886 1.638 1.533 1.476 1.440 1.415 1.397 1.383 63.657 12.706 4.303 3.182 2.776 2.571 2.447 2.365 2.306 2.262 O D. Za/2 = 1.645 9.925 5.841 4.604 4.032 3.707 O E. Neither the normal nor the t distribution applies. 6. Click to select your answer and then click Check Answer. 3.499 3.355 8. 3.250