A Researcher Is Interested in the Relationship Between the Walkability $\pm$

question 115

Short Answer

A researcher is interested in the relationship between the walkability of various cities (defined as how easy it is for residents to walk places as opposed to driving)and obesity rates for residents of these cities.An index is created to measure walkability which can range from 1-7,and 20 major cities in the United States are measured.For each city obesity rates per 1000 people were obtained.Data are in the table below,as well as the rankings for each variable,and difference scores.

SD² = 2350
a.Calculate the Spearman correlation coefficient for the above data set.
b.What are the degrees of freedom for this example.
c.Convert the Spearman correlation coefficient to a t score.
d.Using a critical value of $\pm$ 2.101,describe the statistical conclusion regarding the null hypothesis,and describe the strength and nature of the relationship.

---

Definitions:

Extortion

The act of obtaining something, especially money, through force or threats.

Preexisting Duty

Preexisting Duty is a legal principle stating that an action or service required by an existing contract cannot serve as consideration for a new contract.

Promissory Estoppel

A doctrine that applies when a promisor makes a clear and definite promise on which the promisee justifiably relies. Such a promise is binding if justice will be better served by the enforcement of the promise.

Promisor

An individual or entity that makes a promise to perform an act or fulfill an obligation as specified in a contract.