THE Next Questions Are Based on the Following Information

question 25

Multiple Choice

THE Next Questions Are Based On The Following Information:
A large milling machine produces steel rods to certain specifications.The machine is considered to be running normally if the standard deviation of the diameter of the rods is at most 0.15 millimeters.The line supervisor needs to test the machine is for normal functionality.The quality inspector takes a sample of 25 rods and finds that the sample standard deviation is 0.19.
-What are the null and alternative hypotheses for the test?

• A)H₀ : σ² > 0.15 and H₁ : σ² ≤ 0.15
• B)H₀ : σ ≥ 0.15 and H₁ : σ < 0.15
• C)H₀ : σ = 0.0225 and H₁ : σ ≠ 0.0225
• D)H₀ : σ² ≤ 0.0225 and H₁ : σ² > 0.0225

---

Definitions:

Starting Phase

The initial period or stage of a process or activity during which things are set in motion.

Interdependencies

Mutual dependencies between tasks, processes, or entities where the outcome or performance of one is reliant on another.

Tasks

Specific pieces of work or activities assigned to an individual or a group to be completed.

Delays

Periods of time by which something is late or postponed.