Question: Help me answer pls make sure your correct this is my only hope For numbers 12-13, please refer to the following problem: The following data

Help me answer pls make sure your correct this is my only hope

hope For numbers 12-13, please refer to the following problem: The following

For numbers 12-13, please refer to the following problem: The following data consist of the present school enrollment of the Dr. Vesse High School. A study on the recent teaching strategies will be conducted in this school. Year Level First Second Third Fourth Population Size 150 185 220 245 12. How many samples should the researcher take if she will use 1% margin of error? A. 8 B. 741 C. 751 D. 761 13. Using stratified random sampling, if 200 will be taken as sample, how many representatives from the first year should be drawn? A. 30 B. 38 C. 76 D. 10014. The scores of Psychology students in their GMath quiz are presented in stem-and-leaf plot/diagram: 03 2 224 3 12333 4 11233356 5 3356 24 7 3 Find the midrange and sample variance. A. Midrange = 63; Var = 15.65 B. Midrange = 41.5; Var = 15.34 C. Midrange = 41.5; Var = 245.01 D. Midrange = 63; Var = 235.21

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