![Mathematics](/tpl/images/cats/mat.png)
Mathematics, 23.06.2021 16:10, anishivaturi123
Người ta ghi lại sản lượng lúa mì tính bằng tạ/ha của các mảnh ruộng đã bón lót 50và 100 đơn vị đạm. Trên 11 thửa bón 100 đơn vị đạm cho ta năng suất như sau: 47,9 48,9 43,5 53,1 50,8 46,141,1 43,0 41,0 48,5 47,7 Trên 8 thửa bón 50 đơn vị đạm cho ta năng suất như sau: 47,2 43,1 35,7 47,045,7 42,6 40,7 42,3 Với mức ý nghĩa 5%, có thể kết luận rằng bón lót 100 đơn vị đạm cho năng suất trung bình cao hơn bón lót 50 đơn vị đạm hay không
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Answers: 3
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Mathematics, 21.06.2019 21:30, stressedmolly8387
An annual marathon covers a route that has a distance of approximately 26 miles. winning times for this marathon are all over 2 hours. the following data are the minutes over 2 hours for the winning male runners over two periods of 20 years each. earlier period 14 12 15 22 13 10 19 13 9 14 20 18 16 20 23 12 18 17 6 13 recent period 7 11 7 14 8 9 11 14 8 7 9 8 7 9 9 9 9 8 10 8 (a) make a stem-and-leaf display for the minutes over 2 hours of the winning times for the earlier period. use two lines per stem. (use the tens digit as the stem and the ones digit as the leaf. enter none in any unused answer blanks. for more details, view how to split a stem.) minutes beyond 2 hours earlier period 0 1 2 (b) make a stem-and-leaf display for the minutes over 2 hours of the winning times for the recent period. use two lines per stem. (use the tens digit as the stem and the ones digit as the leaf. enter none in any unused answer blanks.) minutes beyond 2 hours recent period (c) compare the two distributions. how many times under 15 minutes are in each distribution
Answers: 2
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Mathematics, 21.06.2019 23:30, xxaurorabluexx
Pleting the square f the given find the x-intercepts of the parabola with vertex (-5,13) and y-intercept (0, 12). write your answer in this form: (14,.99). if necessary, round to the nearest hundredth. *- h enter the correct answer, de verter, and ametry 00000 done doo
Answers: 2
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Người ta ghi lại sản lượng lúa mì tính bằng tạ/ha của các mảnh ruộng đã bón lót 50và 100 đơn vị đạm....
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