A study in Sweden compared former elite soccer players with people of the same age who had playedsoccer but not at the elite level. Of the 500 former elite soccer players surveyed, 44 % had developedarthritis of the hip or knee by their mid-50s, compared with 42 % of the 500 recreational soccer players.Does it appear that elite soccer players are more likely to develop arthritis of the hip or knee thancomparable recreational soccer players? Test at a = 0.10. Round your answers to three decimal places,and round any interim calculations to four decimal places.Fill in the hypotheses below where p₁ denotes the proportion of elite soccer players who develop arthritisof the hip or knee and på denotes the proportion of recreational soccer players who develop arthritis of thehip or knee.Ho: P₁Ha: P₁This test is right-tailed.P₂✓✓✓✓ P.What is the test statistic?Part 2 of 4

Given p1 denotes the proportion of elite soccer players who develop arthritis of the hip of knee and…

Answered: A study in Sweden compared former elite…

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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A student is interested in knowing if there is a relationship between the age of a child and the amount of time spent on the computer. He asks 7 people their ages and the number of hours they spend on the computer. Is there a relationship between age and the amount of time spent on computers? Test at a = .05 level of significance. Age of child (yrs) Time on computer (hrs) 11 17 4. 10 4. 1 13 8.
this is part 2 of a question. Although older Americans are most afraid of crime, it is young people who are more likely to be the actual victims of crime. It seems that older people are more cautious about the people with whom they associate. A national survey showed that 10% of all people ages 16-19 have been victims of crime.† At a high school, a random sample of n = 66 students (ages 16-19) showed that r = 11 had been victims of a crime. Note: For degrees of freedom d.f. not in the Student's t table, use the closest d.f. that is smaller. In some situations, this choice of d.f. may increase the P-value a small amount and thereby produce a slightly more "conservative" answer. Find a 90% confidence interval for the proportion of students in this school (ages 16-19) who have been victims of a crime. (Round your answer to three decimal places.) lower limit upper limit (c) How large a sample size should be used to be 95% sure that the sample proportion p̂ is within…
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A poll was conducted on a representative sample of 600 adults living in the United States in order to investigate the decline in cable and satellite TV subscriptions. For this sample, 150 adults revealed that they are "cord cutters," (that is, they canceled their cable/satellite TV service and now only use a video streaming service). You want to estimate p, the true proportion of all US adults who are "cord cutters." Complete parts a through e. d. Give a practical interpretation of the confidence interval from part c. (Type integers or decimals rounded to three decimal places as needed. Use ascending order.) A. The probability that the true proportion of all US adults who are "cord cutters" is enter your response here lies between enter your response here and enter your response here. B. We can be enter your response here% confident that the true proportion of all US adults who are "cord cutters" lies between enter your response here and enter your…
In a recent poll 600 adults were asked a series of questions about the state of the economy and their children's future. One question was, "do you expect your children to have a better life than you have had, a worse life, or a life about the same as yours?" Suppose the responses showed 245 better, 313 worse, and 42 about the same. Use the sign test and a = 0.05 to determine whether there is a difference between the number of adults who feel their children will have a better life compared to a worse life. State the null and alternative hypotheses. (Let p = the proportion of adults who feel their children will have a better life.) Find the value of the test statistic. (Round your answer to two decimal places.) z= Find the p-value. (Round your answer to four decimal places.) p-value=
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. Is using meditation to relax and clear the mind a natural way to treat insomnia? Design an experiment to investigate this question. Assume that you have 20 individuals who suffer from insomnia available to participate in the study. At the end of two months, you will ask subjects to rate their sleep quality.
Investigators are trying to determine if the contamination of a town well led to significant increases in adverse health effects. During the period of time when water was consumed from this contaminated well, there were 16 birth defects among 414 births. After this well was shut off, there were 3 birth defects among 228 births. You asked to determine if the rate of birth defects was higher when the contaminated well was in use. a. Test the claim that the contaminated well was not associated with a change in the rate of birth defects in the community at the alpha = 0.05 level, by using the two-proportion z test. Confirm your answers using Stata. b. Calculate a 95% confidence interval for the true difference between the proportions of birth defects when the contaminated well was in use versus when the well was shut down. c. Construct the 2x2 contingency table representing the data to Calculate the odds of a birth defect when the contaminated water was consumed and when the well was shut…
can you please help me with my stats homework?
A study in Sweden compared former elite soccer players with people of the same age who had played soccer but not at the elite level. Of the 500 former elite soccer players surveyed, 36 % had developed arthritis of the hip or knee by their mid-50s, compared with 34 % of the 500 recreational soccer players. Does it appear that elite soccer players are more likely to develop arthritis of the hip or knee than comparable recreational soccer players? Test at a = 0.05. Round your answers to three decimal places, and round any interim calculations to four decimal places. Fill in the hypotheses below where p₁ denotes the proportion of elite soccer players who develop arthritis of the hip or knee and på denotes the proportion of recreational soccer players who develop arthritis of the hip or knee. Ho: P₁ Ha: P₁ This test is right-tailed. P₂ P₂ ✓✓ What is the test statistic? Hint: Make sure you are using the correct value for the standard error. Part 2 of 4
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Taylor Swift is interested in learning what proportion of her fans want her to re-record her masters, so she takes a simple random sample of 500 fans and asks them. Of the 500 fans, 487 of them (97.4%) respond that they want her to re-record all of her masters. What is the parameter and what is its value? a. The parameter is the average number of all Taylor Swift fans who want her to re-record her masters, which is unknown. b. The parameter is the proportion of the sampled Taylor Swift fans who want her to re-record her masters, which is unknown. c. The parameter is the group of the sampled Taylor Swift fans who want her to re-record her masters, which is 487. d. The parameter is the proportion of the sampled Taylor Swift fans who want her to re-record her masters, which is 0.974. e. The parameter is the proportion of all Taylor Swift fans who want her to re-record her masters, which is unknown. f. The parameter is the proportion of all…

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