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24)____________       An SAT prepcourse claims to improve the test scores of students. The

                                    tableshows the scores for seven students the first two times theytook                    

25)_____________     the verbal SAT. Beforetaking the SAT for the second time, each

                                    studenttook a course to try to improve his or her verbal SATscores.  

                                   Test the claim at a = .05. List the a) nullhypothesis b) averagedifference       

                                   betweenthe scores        

         

Student	1	2	3	4	5	6	7
Score on First SAT	308	456	332	443	306	471	432
Score on Second SAT	421	524	400	421	348	589	391

26)______________   In a crash test at five miles perhour, the mean bumper repair cost for 14

                                   midsizecars was $547 with a standard deviation of $85. In a similartest              

                                   of23 small cars, the mean bumper repair cost was $347 with astandard                      

27)______________ deviation of $185. At a = 0.05, can youconclude that the mean bumper

                                   repaircost is the same for midsize cars and small cars? Listthe

                                   26)p-value 27) accept or reject.