Use t-test to determine if there is a significant difference betwee the scores of the students in Statistics the pre- test and post test. Use 1% level of significance.  Method Scores Pre Test 45 44 40 56 55 52 51 50 53 47 Post Test 48 55 51 59 64 62 54 52 54 50

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Find the​ mean, median, and mode of the​ data, if possible. If any of these measures cannot be found or a measure does not represent the center of the​ data, explain why.   A sample of seven admission test scores for a professional school are listed below.     11.1 ,  10.7 ,  10.4 ,  9.5 ,  11 ,  9.5 , 11.4     What is the mean​ score? Select the correct choice below and fill in any answer box to complete your choice.     A. The mean score is= ​(Round to one decimal place as​ needed.)   B. There is no mean score.     What is the median​ score? Select the correct choice below and fill in any answer box to complete your choice.   A. The median score is= ​(Round to one decimal place as​ needed.)   B. There is no median score.   What is the mode of the​ scores? Select the correct choice below and fill in any answer box to complete your choice.     A. The​ mode(s) of the scores is​ (are)= ​(Use a comma to separate answers as​ needed.)   B. There is no mode.

The midterm and final exam grades for a statistics course are provided in the data set below. Jaymes, a student in the class, scored 86 on both exams. Treat the given data sets as samples. Midterm: 80, 78, 85, 82, 79, 79, 78, 86, 80, 84, 78, 84, 80, 84, 81, 78, 81, 82, 78, 84 Final: 81, 88, 68, 69, 69 81, 82, 86, 76, 71, 72, 68, 77, 86, 68, 83, 84, 71, 81, 87 z-score for midterm: 1.857 z-score for final: 1.181 Based on the z-scores calculated above, which of Jaymes's grades is more unusual, the midterm grade or the final exam grade? Select the correct answer below: A. The absolute value of the z-score for the final exam grade is greater than for the midterm grade, so the final exam grade is more unusual. B. The absolute value of the z-score for the midterm exam grade is less than for the final grade, so the midterm grade is more unusual. C. The absolute value of the z-score for the midterm exam grade is greater than for the final grade, so the midterm grade is more…