Please answer c

Question Part 3 of 3 - Part II Using a t-distribution table or software or a calculator, report the t-statistic which is multiplied by the standard error to form the marain of error for the following cases. K a. 90% confidence interval for a mean with 9 observations. b. 90% confidence interval for a mean with 19 observations. t-distribution c. 95% confidence interval for a mean with 19 observations. Click the icon to view the t-distribution table. Distribution Critical Values Confidence Level 80% 90% 95% 98% 99% Right-Tail Probability df 3.078 6.314 12.706 31.821 63.656 a. t= 1.859 (Round to three decimal places as needed.) 4 303 N 1 886 2.920 6.965 9.925 b. t= 1.734 (Round to three decimal places as needed.) 1.638 2.353 3.182 4.541 5.841 1.533 2132 2.776 3747 4.604 c. t= (Round to three decimal places as needed.) 1.476 2015 2.571 3265 4.032 1:440 1.943 2417 3.143 3.707 1.415 1.805 2 365 3.499 1.397 1.860 2.306 2.896 3.355 1:383 1833 2262 2.821 3.250 10 1.372 1812 2.228 2764 3.169 11 1.363 1.796 2.201 2.718 3.106 12 1.356 1.782 2:179 2.681 3.055 13 1.350 1.771 2.160 2.650 3.012 14 1:345 1.761 2.145 2.624 2.977