Decide between the null and alternative hypotheses

Reference no: EM131817662

Teen athletes often wear ankle and knee braces to protect themselves from sports injuries.

a. Suppose the proportion of all teen athletes who suffer ankle and knee injuries is p₀. The null hypothesis would state that the proportion p of teen athletes with ankle and knee braces who suffer such injuries is the same-H₀ : p p₀. State the alternative hypothesis, first in words and then mathematically, if we suspect that ankle and knee braces help protect against injuries.

b. A study of student athletes in 100 North Carolina high schools in the late 1990s found that "North Carolina teens who wore ankle and knee braces were 1.6 to 1.7 times more likely to become injured than their fellow athletes." Explain why there is no need to find a standardized sample proportion and a P-value to decide between the null and alternative hypotheses (from part [a]) in this case.

c. Before concluding that ankle and knee braces actually increase the likelihood of injury, possible confounding variables should be taken into account. Give at least one reason why someone wearing such a brace might be more susceptible to injury, besides the brace itself causing the injury.

Reference no: EM131817662

Questions Cloud

What is a plantwide overhead rate : What is a plantwide overhead rate? Why are multiple overhead rates, rather than a plantwide overhead rate, used in some companies

Discuss the ais itself rather than the workflow : How would that change if the company asked you to document the AIS itself rather than the workflow

Determine the various types of financial transactions : Do a quick Internet search (20 minutes max) to determine the various types of financial transactions that take place on Wall Street.

Determine variable factory overhead controllable variance : Determine variable factory overhead controllable variance, the fixed factory overhead volume variance and total factory overhead cost variance

Decide between the null and alternative hypotheses : Explain why there is no need to find a standardized sample proportion and a P-value to decide between the null and alternative hypotheses

Explain how would you encourage the members of organization : Explain how would you encourage the members of an organization to become competent communicators to enhance the corporate communication strategy?

Annual cash flows before tax : Venture Tech. Inc. has just completed market research on a new smartphone at the cost of $350,000. Annual cash flows before tax

What do you see as the most important provision : What do you see as the most important provision in the Wagner or National Labor Relations Act? Support your view with at least one reference

Discuss how any comprehensive reports prepared : discuss how any comprehensive reports prepared for decision makers are compiled by your company, past or present

User Account

All Pages