Use the contingency table to answer the questions: (a) What percent of people go

Question

Use the contingency table to answer the questions: (a) What percent of people got a cold during the study? _____ (b) What percent of people on the treatment got a cold during the study? _____ (c) What percent of people on the placebo got a cold during the study? _____ (d) Does it look like getting a cold was independent of getting the treatment, or associated (i.e. not independent)? Justify your answer, using the numbers from the table or from your answers above. _____ (a) What is wrong with the graph below? _____ (b) Try to estimate the travel expense for the R&D; department. _____

Explanation / Answer

a) % of people getting cold =(48/279)*100=17.20%

b)% of people on the treatment getting cold =(17/139)*100=12.23%

c)% of people on the placebo getting cold =(31/140)*100=22.14%

d) as % of getting cold is different for both categories therefore getting cold was not independent of treatment,.

2)

height of bars are not easily aligned with their respective axis and therefore is difficult to interpret.

b)estimated travel expense for R &D department =25

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