What is the t-value associated with 11 degrees of freedom and 2.5% in the tail? (please round your answer to 3 decimal places)

what z value correlates to 98.96% under  the curve

what percent of 1/18 is 1/15? round to the nearest tenth digit

In your English class, essays are 40% of your grade, homework is 20% of your grade, attendance is 5% of your grade, and the final project is 35% of your grade. At the end of the semester, your essay average is 88, your homework average is 92, and your attendance average is 91. What score do you need on the final project to get an A- (90%) in the class? (Round your answer to 2 decimal places.)