Nutritional intake in Canadian highperformance male athletes. Since previous studies have reported that elite athletes are often deficient in their nutritional intake (for example, total calories, carbohydrates, protein), a group of researchers decided to evaluate Canadian high-performance athletes.
A total of n = 114 male athletes from eight Canadian sports centers were surveyed. The average caloric intake was 3077.0 kilocalories/day with a standard deviation of 987.0. The recommended amount is 3421.7. Is there evidence that Canadian high-performance male athletes are deficient in their caloric intake?
(a) State the appropriate H0 and Ha to test this.
(b) Carry out the test, give the P-value, and state your conclusion.
(c) Construct a 95% confidence interval for the average deficiency in caloric intake.