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In: Statistics and Probability

Since previous studies have reported that elite athletes are often deficient in their nutritional intake (for...

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 = 324 athletes from eight Canadian sports centers participated in the study. One reported finding was that the average caloric intake among the n = 201 women was 2403.7 kilocalories per day (kcal/d). The recommended amount is 2811.5 kcal/d.

For one part of the study, n = 114 maleathletes from eight Canadian sports centers were surveyed. Their average caloric intake was 3077.0 kilocalories per day (kcal/d) with a standard deviation of 987.0. The recommended amount is 3422.1. Is there evidence that Canadian high-performance male athletes are deficient in their caloric intake?


(b) Carry out the test. (Round your answer for t to three decimal places.)

t = ?
Give the degrees of freedom.
= ?

Give the P-value. (Round your answer to four decimal places.)  

=?
(c) Construct a 95% confidence interval for the daily average deficiency in caloric intake. (Round your answers to one decimal place.)

( , ) kcal/day =?

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orchestra answered 2 years ago
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