In an Effort to Improve Productivity in Its Factory,a Firm

question 78

Multiple Choice

In an effort to improve productivity in its factory,a firm recently instituted a training program for its workers.One of the work crews consisted of 14 workers.Seven workers from this crew were selected at random to attend the training course.All seven workers selected successfully completed the training course.The remaining seven workers served as a control group and did not attend the training course.Three months after the training course,a foreman who did not know which employees attended the training course was asked to rank all 14 employees in terms of their productivity.A rank of 14 indicates the most productive employee in the crew,while a rank of 1 indicates the least productive worker. $$\begin{array} { c c } \text { Trained Ranks } & \text { Untrained Ranks } \\7 & 6 \\12 & 2 \\14 & 9 \\4 & 3 \\8 & 1 \\13 & 5 \\10 & 11\end{array}$$
State the null hypothesis for this problem.

• A)H₀: D_T ? D_U
• B)H₀: D_T ? D_U
• C)H₀: D_T ? D_U
• D)H₀: D_T > D_U

---

Definitions:

Empty

Referring to a container or space that contains nothing; completely devoid of content or occupants.

Include Tax

To factor in the applicable taxes when stating a price or calculating the total cost of goods or services.

Average Speed

The total distance traveled divided by the total time taken to travel that distance.

Los Angeles

A major city in the state of California, USA, known for its entertainment industry, diverse population, and cultural landmarks.