Answer all 3 parts 25 points a teacher surveyed her class after they had taken a vocabulary test. eighteen of the students claimed they had studied at least one hour for the test. the remaining twelve students admitted that they had not studied for the test at all. the test results (expressed as a percent) for the two groups are shown below. studied: 87, 100, 94, 79, 92, 100, 95, 83, 89, 99, 100, 91, 89, 95, 100, 93, 96, 83 did not study: 82, 72, 45, 91, 58, 83, 65, 87, 90, 77, 73, 89 part 1: calculate the mean of the group that did not study, rounded to the nearest tenth. part 2: calculate the mean absolute deviation of the group that did not study, rounded to the nearest tenth. part 3: how many of the scores (from the group that did not study) are more than two mean absolute deviations from the mean?

answer: 4 (:

step-by-step explanation:

answer: the proof is mentioned below.

step-by-step explanation:

since, given:   lines bc = ef

prove:   lines ac > ef

          statements                                           reason

1. bc=ef                                           1. given

2. ac= ab+bc                                 2. because b is the point between the  

                                                            line segment ac

3.   ac > bc                                       3. because if a line segment is equal to

                                                          the sum of two line segments then it is

                                                          always greater then each of these

                                                          individual line segments

4. ac > ef                                         4. by equality property.

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