Use the Table Below to Answer the Following Questions) -Calculate the ??_?/2 Value at a 95% Confidence Interval

question 12

Multiple Choice

Use the table below to answer the following questions) .
The historical data of Velvetta Inc., a healthcare products manufacturer, have shown that in a production process for filling bottles of shampoo, variance in the volume is constant; however, clogs in the filling machine often affect the mean volume. The historical standard deviation is 5 milliliters. In filling 250-milliliter bottles, a sample of 20 found a mean volume of 242 milliliters. $$\begin{array}{l}\begin{array} { | l | l | } \hline\text { Velvetta Inc. Shampon }\\ \text { Productim } & \\\hline \text { Alpha Vulue } & 0.05 \\\hline \text { Standard Deviation } & 5 \\\hline \text { Sample Size } & 20 \\\hline \text { Sample Mean } & 242 \\\hline\end{array}\end{array}$$
-Calculate the ??_?/2 value at a 95% confidence interval.

• A) 1.64
• B) 1.84
• C) 1.96
• D) 2.19

---

Definitions:

Norepinephrine

A neurotransmitter released by sympathetic neurons onto organs and glands for fight-or-flight (stressful) situations.

Acetylcholine

A neurotransmitter in the nervous system that plays a critical role in muscle activation and memory formation.

Resting

A state of minimal activity or motion, allowing for recovery and rejuvenation of the body or mind.

Olfactory

Refers to the sense of smell or the system in the body responsible for detecting odors.