An article in the Journal of Sports Science (1987, Vol. 5, pp. 261-271) presents the results of an investigation of the hemoglobin level of Canadian Olympic ice hockey players. The data reported are as follows (in g/dl): 15.3 16.0 14.4 16.2 16.2 14.9 15.7 15.3 14.6 15.7 16.0 15.0 15.7 16.2 14.7 14.8 14.6 15.6 14.5 15.2 Find to 2 decimal places the following: (a) An interval that contains 90% of the hemoglobin values with 90% confidence. (b) An interval that contains 95% of the hemoglobin values with 90% confidence.