The writer is very fast, professional and responded to the review request fast also. Thank you.
Since previous studies have reported that elite athletes are often deficient in their nutritional intake, 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 kcal/day. The recommended amount is 2811.5 kcal/day. Is there evidence that female Canadian high performance athletes are deficient in caloric intake?
(a) State the appropriate H0 and HA to test this.
(b) Assuming a standard deviation of 880 kcal/day, carry out the test at the α = 0.05 level. Make sure to interpret the results in plain language.
Now suppose a nutritionist is brought in to implement a new health program for the female athletes. This program should increase mean caloric intake but not change the standard deviation. Given the standard deviation, and how calorically deficient these athletes are, a change in the mean of 50 kcal/day to 2453.7 is of little practical importance. However, with a large enough sample, this change can be statistically significant. To see this, calculate the P-value for the test of H0 : µ = 2403.7 versus HA : µ > 2403.7. in each of the following situations:
c) In a sample of 500 athletes, the average caloric intake is x¯ = 2453.7.
(d) In a sample of 2500 athletes, the average caloric intake is x¯ = 2453.7.
Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.
You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.
Read moreEach paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.
Read moreThanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.
Read moreYour email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.
Read moreBy sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.
Read more