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3. To compare the viability of coronavirus (how long the virus stays infectious) on paper vs cardboard, a paired experiment was designed. 6 sheets of

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3. To compare the viability of coronavirus (how long the virus stays infectious) on paper vs cardboard, a paired experiment was designed. 6 sheets of paper and 6 pieces of cardboard were selected, and each sheet was paired with a cardboard piece. Then each pair was contaminated with a known quantity of coronavirus (different for each pair). The viabilities were measured in hours and are reported in the following table. Viability (hrs) Paper 23 25 24 26 25 22 Cardboard 24 22 23 22 22 20 A technician working in the lab worked on a quick draft to compare the viabilities on paper vs cardboard, by conducting a 99% confidence interval analysis. You must review his solution, find his mistakes and omissions (missings), and correct them. (9 marks) (Disclaimer: This example is made up only for the purpose of assessing your knowledge of statistical analysis and the numbers are not based on actual studies.) Hint: To correct the solution, one option is for you to repeat the solution (as is) on your answer sheet and then cross and fix the mistakes and add the missing parts right there (with a different color pen). The other option is that you just write a list of the mistakes and omissions (with bullet points or numbers) and then in front of each mistake write the corrected form of it. Draft SOLUTION by the technician: 99% Confidence Interval for paired comparison. Paper 23 25 24 26 25 22 Cardboard 24 22 23 22 22 20 D = Cardboard - Paper -3 -3 -2 2 hrs D = 2 hrs, Sa = 1.79 hrs Sy = 3. 2 hrs to.005, 11 = 3.106 Confidence Interval: Hp = 2 + 3.106 x 1.79/V12 60. 00515 = 4.032 0.396 hrs

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