need help with all questions

TMA 04 Cut-o' date 17 August 2022 You should be able to answer Questions 1 and 2 after you have studied Unit 10. You should be able to answer Questions 3 to 5 after you have studied Unit 11. You will need to use Minitab to answer parts (b) and (e) of Question 1. You will need to use Minitab to answer Question 5. Question 1 (Unit 10) 24 marks This question concerns the analysis of the mustard seedlings experiment that you were asked to carry out in Unit 16'. You will need to use Minitab to answer parts (b) and (e). (a) In one or two sentences, describe how your experiment went; for example, mention any difculties that you faced along the way. Then present a table of your collected data, similar in layout to Table 3 of Unit 10 (Subsection 3.4]. Indicate clearly the units in which you made your measurements (for example, millimetres) and the measurements that correspond to seedlings whose stems were cut during their growth. Then proceed to part (b) of the question. If, however, you were unable to collect data of your own, then state this and explain why. Instead of presenting results in a table, draw stemplcts for each of the two samples of data given in Table 1, including only measurements from seedlings whose stems were cut during growth. Also, give the main reason for producing such stemplcts in the context of a ttest, and comment on the shape of the stemplcts relative to this reason. Table 1 Lengths of roots (in mm) obtained in a mustard seedlings experiment Seedlings grown in light Seedlings grown in dark 24 29 26 x x 25 32 x 22 42 x 28 22 30 19 42 37 33 19 x x 44 x 37 31 x 26 28 x 33 27 28 21 29 18 30 x 27 29 30 In Table 1, measurements given in bold were obtained from seedlings whose stems were cut during their growth. A cross indicates a seed which did not germinate. [6] To answer the remainder of this question, you should use your own data if you have them. Otherwise, use the data from Table 1. (b) Run Minitab and type your data into columns headed Light, for lengths of roots of seedlings grown in light, and Dark, for lengths of roots of seedlings grown in the dark, for all the seedlings whose stems you cut. In your answer, provide a list of the data as it appears in your Minitab worksheet. (You should also save a copy of your worksheet in order to be able to work on it again at another time.) Use Minitab to calculate the values of the sample variances of the two columns of data. Include a copy of the relevant Minitab output in your answer. [3] page 3 of 6