The Respiratory Turbulence Index (RTI) is used to measure breathing in people with sleep apnoea. An index of 5 or more indicates a severe infection and the person must undergo surgery. The data for the patients who took part in the study are given in the following table, according to gender:
Women:
2, 6, 19.3, 1.4, 1.0, 0, 0, 39.2, 4, 1, 0.0, 2, 1
Men:
6, 1, 3, 5, 7, 3, 2, 3, 2, 8, 4, 4, 8, 0
1, 1, 5, 6, 5, 0, 7, 0, 2, 3, 4, 1, 7, 5, 3, 3, 8, 9, 7, 3
a- Determine the main measures (mean, standard deviation, median) for each of these two samples.
b- What are the most relevant hypotheses to test for each of the 2 groups?
c- Test them at a significance level of 5%.
d- Draw a general conclusion.