Question 4 [7 marks]

A study to determine haemoglobin due to the strength of medication categorised into 5 groups were conducted on 27 women aged 18-40 years. The table below displays the data and the relevant descriptive quantities.

Medication Strength

ABCDE

0.80.71.21.00.6

0.60.81.00.90.4

0.60.50.90.90.4

0.50.51.21.10.7

0.61.30.7 0.3

0.90.8

0.7

a) Normality assumption was checked, and it was not normally distributed. Hence, determine if the five groups of medication strength have the same median haemoglobin level? [5 marks]

b) Write brief summary of what the result show.