Find the critical value t for the following situations. a) a 98% confidence interval based on df = 22. b) a 95% confidence interval based on df = 58. E Click the icon to view the t-table. a) What is the critical value of t for a 98% confidence interval with df = 22? (Round to two decimal places as needed.) b) What is the critical value of t for a 95% confidence interval with df = 58? (Round to two decimal places as needed.)