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page 4 of 6 This study source was downloaded by 1m9a47ms from Courschrosom on Oil102022 10:57:41 GMT 05:00 Imps :fwwwcoursehetaccmflefl 3503'6247mm1 WMhpdff Question 3 (Unit 11) 5 marks Osteoporosis is a common, chronic condition that weakens bonts, making them fragile and more likely to break. It develops slowly over several years and is often only diagnosed when a fall or sudden impact causes a bone to break. Drugs do not cure osteoporosis, but they may reduce the symptoms or slow down the progress of the disease. A medical research team wishes to compare the efcacy of two drugs, B1 and B2, that can be used to temporarily alleviate symptoms. It is known that these two treatments will alleviate symptoms only whilst the drug is being taken. Consider the two designs below in turn. Explain how each of the two designs could be implemented in this context. Finally, state which design you would recommend, justifying your choice. Your answer should discuss any pros and cons (if there are any) for each type of trial in this context. e A matched-pairs design I A crossover design [5] Question 4 (Unit 11) i 6 marks A scientic research company uses a competency framework to assess skills as part of an employee development programme. One of the developers conducted an experiment to see whether coaching helped to improve individuals\" scores on some of the assessed competencies. A group-comparative design was used. At the start of the programme, each one of 32 employees was asked to supply evidence to show how they initially met ve of the elements given in Table 3. The evidence of each employee was then scored. Table 3 Elements of competencies for which evidence was requested in the experiment Actively maintains and develops knowledge of scientic and mathematical concepts Communicates ideas in a clear and competent manner Time management and organisation Develops skills in data analysis, interpretation, and presentation of results Participates in continuous performance improvement [211500379 One group of 16 employees, chosen at random, took part in several interactive online coaching sessions alongside the standard development programme. The other group of 16 employees took part in only the standard development programme. At the end of the programme, all employees were asked to resubmit their evidence about how they met the elements in Table 3. The resubmitted evidence was then scored, and the change in the score for each employee was recorded. The resulting data are to be analysed using a hypothesis test. (a) What type of data are produced in this experiment? Give a brief reason. [1] (b) Fiom the hypothesis tests listed at the start of Subsection 4.4 of Unit 11, give the name of the meet appropriate test for analysing these data, together with two reasons for your answer. [3] (c) M140 has added to your skills in the ve elements given in Table 3. Choese two of these elements. For each of them, give one specic example of how your skills have improved thanks to M140. [2] page 5 of 6 This study source was downloaded by lW'JMTTB from Coumchro.com on 08- 102022 [0:57:41 GMT 4:35:00