A Researcher Claims That the Lifetimes (In Hours)of Fluorescent Light $$\alpha$$

question 55

Essay

A researcher claims that the lifetimes (in hours)of fluorescent light bulbs are the same regardless of
manufacturer. Random samples are selected from 3 different manufacturers. The data are listed below. Test the
claim that the samples come from identical populations by using (a)a one-way ANOVA test and
(b)a Kruskal-Wallis test. Compare the results. Use $$\alpha$$ = 0.05. $$\begin{array} { c | c | c } \text { Manufacturer 1 } & \text { Manufacturer 2 } & \text { Manufacturer 3 } \\\hline 190220 & 180170 & 200210 \\235215 & 200175 & 195205 \\225230 & 175180 & 200205 \\215220 & 190185 & 205205\end{array}$$

---

Definitions:

Managers

Individuals in an organization responsible for planning, directing, coordinating, and overseeing the work of others to achieve the organization's goals.

Crowdsourcing

The practice of obtaining information, ideas, input, or funding from a large, typically online, group of people, rather than relying on traditional employees or suppliers.

Decision Process

The sequence of actions and rational considerations undertaken to select an option among available alternatives.

Collection of Experts

A group of individuals with specialized knowledge or skills brought together to tackle specific problems or projects.