Question

le Determine the t-value in each of the cases. Click the icon to view the table of areas under the t-distribution. (a) Find the t-value such that the area in the right tail is 0.01 with 19 degrees of freedom. (Round to three decimal places as needed.) (b) Find the t-value such that the area in the right tail is 0.05 with 20 degrees of freedom. (Round to three decimal places as needed.) (c) Find the t-value such that the area left of the t-value is 0.25 with 17 degrees of freedom. (Hint: Use symmetry.) (Round to three decimal places as needed.) (d) Find the critical t-value that corresponds to 80% confidence. Assume 9 degrees of freedom. (Round to three decimal places as needed.) Enter your answer in each of the answer boxes nis course (Stat To Summer 2020) is based on Sullivan: Statistics informed Decisions Using Data, be

Answer 1

сі right tail for, oool a dif. = 19 form t-dister uklon table we t-valen := 2.53948 2.539 gex b] for to dof 0.05 - २० right tai from t-distribution table we Bet t- Value 137.2 4710 1-7.24 プ teft tail ge ㅏ for .0.25 with defo=17 from t-distribution table we t-valle 1-0.689195 . 0.319 d] for 80% confidence with dif.29 t-Value {from t-distribution = 1-303 table