Open the Navajo Women dataset. In this dataset, Body Mass Index (BMI) and a number of other variables are recorded for 768 randomly selected Navajo Indian women.

(a) Using Minitab, test at the 3% level whether the average BMI of Navajo women is less than 33. (Hint: 1-sample t) State your conclusion in terms of the data.
(b) Considering the other variables recorded, do you think your result above gives much of a useful insight into this data