Vitamin D, whether ingested as a dietary supplement or produced naturally when sunlight falls upon the skin, is essential for strong, healthy bones. The bone disease rickets was largely eliminated during the 1950s, but now there is concern that a generation of children more likely to watch TV or play computer games than spend time outdoors is at increased risk. A recent study of 2900 children randomly selected found 23% of them deficient in vitamin D. Complete parts a through c below. a) Construct a 98% confidence interval for the true proportion of children who are deficient in vitamin D. Select the correct choice below and fill in any answer boxes within your choice. O A. (Round to three decimal places as needed.) OB. The conditions of a confidence interval are not satisfied

Vitamin D, whether ingested as a dietary supplement or produced naturally when sunlight falls upon the skin, is essential for strong, healthy bones. The bone disease rickets was largely eliminated during the 1950s, but now there is concern that a generation of children more likely to watch TV or play computer games than spend time outdoors is at increased risk. A recent study of 2900 children randomly selected found 23% of them deficient in vitamin D. Complete parts a through c below. a) Construct a 98% confidence interval for the true proportion of children who are deficient in vitamin D. Select the correct choice below and fill in any answer boxes within your choice. O A. (Round to three decimal places as needed.) OB. The conditions of a confidence interval are not satisfied

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Research is interested in the relationship of video games of high school students' SAT scores, and he hypothesizes that students who play video games for a longer time are predicted to have a lower SAT score. To test his hypothesis, he randomly selected 60 high school students and asked: 1) how many hours do you spend playing video games each week? 2) what is your SAT score? a) What is the research question? b) What graphs can be used to display the video games time and SAT score visually? c) What statistical test can be used to answer the research question?
Vitamin D, whether ingested as a dietary supplement or produced naturally when sunlight falls upon the skin, is essential for strong, healthy bones. The bone disease rickets was largely eliminated during the 1950s, but now there is concern that a generation of children more likely to watch TV or play computer games than spend time outdoors is at increased risk. A recent study of 2800 children randomly selected found 22% of them deficient in vitamin D. Complete parts a through c below. a) Construct a 98% confidence interval for the true proportion of children who are deficient in vitamin D. Select the correct choice below and fill in any answer boxes within your choice. A. (Round to three decimal places as needed.) OB. The conditions of a confidence interval are not satisfied. w an example 3 E reen Sh -0...08.4 creen Shot -0...09.49.
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Philosophical and health issues are prompting an increasing number of Taiwanese to switch to a vegetarian lifestyle. A study published in the Journal of Nutrition compared the daily intake of nutrients by vegetarians and omnivores living in Taiwan. Among the nutrients considered was protein. Too little protein stunts growth and interferes with all bodily functions; too much protein puts a strain on the kidneys, can cause diarrhea and dehydration, and can leach calcium from bones and teeth. Independent random samples of 51 female vegetarians and 53 female omnivores yielded the following summary statistics, in grams, on daily protein intake. Vegetarians: X₁ = 39.04, s₁ = 18.82, n₁ = 51 Omnivores: X₂ = 49.92, S₂: 18.97, n₂ = 53 a. Do the data provide sufficient evidence to conclude that the mean daily protein intakes of female vegetarians and female omnivores differ? Perform the required hypothesis test at the 1% significance level. Assume equality of variances. b. Determine a 99%…
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