D Question 11 3 pts Free response part: Use the following information to answer questions 11-15 Problem 1. The table below shows the Mathematics SAT scores for 7 randomly selected students who took the tests twice. Student 1 2 3 4 5 6 7 Score on first try 457 419 343 539 394 413 392 Score on second try 532 523 427 607 444 490 428 Assume the populations of scores for both times are normally distributed. At alpha=0.05 , test the claim that the Mathematics SAT scores improved on the second try. Define d = scores on the first try- scores on second try (a) (3pts) Ho: Md = 0 Ha: ? Ha: Md 0Question 12 4 pts What is closest test statistics value: (format is X.XXXX ex: -2.456 or 1.458 ) -8.373 Question 13 4 pts nd the critical value (hint if tail is right value is positive , if tail is negative it is negative number, if it is two tail you have to enter two values) format X.XXX 4.943