5. Three groups of students involved in the same elnr'iculum are obliged to study for 15 minutes, 30 minutes, or 90 minutes anight for 8 weeks before taking a mathematics test. Scores from 5 students in each group were randomly selected to determine if there was a difference among the three time groups. Their scores are as follows: 15 minutes: 43, 39, 55, 56, 73 30 minutes: 55, 58, 66, 79, 82 90 minutes: 61, 66, 85, 86, 91 6. An administrator is interested in determining if the type of reading curriculum students receive is related to whether they meet reading standards for their grade. The following data were collected. Curriculum A Curriculum B Curriculum C Met Standard 8 5 3 Did Not Meet Standard 7 13 13 7. Suppose the National Transportation Safety Board (NT SB) wants to examine the safety of compact cars, midsize cars, and full-size cars. It collects a sample of three for each of the treatments (cars types). The hypothetical data provided below from 10 trials report the mean pressure applied to the driver's head during a crash test for each type of car. Compact: 635, 671, 648, 685, 648, 651, 654, 682, 687, 627 Midsize: 482, 529, 541, 518, 497, 526, 507, 492, 499, 451 Full-size: 451, 483, 464, 447, 456, 499, 484, 492, 449, 449